Home / 7,125.78-10,688.67-2,507.70

Finding the Fourth Proportional to 7,125.78, 10,688.67 and 2,507.70

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Solution

The fourth proportional to 7,125.78, 10,688.67 and 2,507.70 is: 3,761.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.78 : 10,688.67 = 2,507.70 : x
  2. Step 2: Convert to fraction form
    7,125.78/10,688.67 = 2,507.70/x
  3. Step 3: Cross multiply
    7,125.78x = 10,688.67 × 2,507.70
  4. Step 4: Simplify right side
    7,125.78x = 26,803,977.76
  5. Step 5: Solve for x
    x = 26,803,977.76/7,125.78
  6. Step 6: Final answer
    x = 3,761.55

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.