Home / 7,507.78-10,336.51-6,179.20

Finding the Fourth Proportional to 7,507.78, 10,336.51 and 6,179.20

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Solution

The fourth proportional to 7,507.78, 10,336.51 and 6,179.20 is: 8,507.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,507.78 : 10,336.51 = 6,179.20 : x
  2. Step 2: Convert to fraction form
    7,507.78/10,336.51 = 6,179.20/x
  3. Step 3: Cross multiply
    7,507.78x = 10,336.51 × 6,179.20
  4. Step 4: Simplify right side
    7,507.78x = 63,871,362.59
  5. Step 5: Solve for x
    x = 63,871,362.59/7,507.78
  6. Step 6: Final answer
    x = 8,507.36

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.