Home / 4,353.78-6,530.67-1,275.78

Finding the Fourth Proportional to 4,353.78, 6,530.67 and 1,275.78

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Solution

The fourth proportional to 4,353.78, 6,530.67 and 1,275.78 is: 1,913.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,353.78 : 6,530.67 = 1,275.78 : x
  2. Step 2: Convert to fraction form
    4,353.78/6,530.67 = 1,275.78/x
  3. Step 3: Cross multiply
    4,353.78x = 6,530.67 × 1,275.78
  4. Step 4: Simplify right side
    4,353.78x = 8,331,698.17
  5. Step 5: Solve for x
    x = 8,331,698.17/4,353.78
  6. Step 6: Final answer
    x = 1,913.67

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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.