Home / 7,139.10-10,708.65-4,806.30

Finding the Fourth Proportional to 7,139.10, 10,708.65 and 4,806.30

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Solution

The fourth proportional to 7,139.10, 10,708.65 and 4,806.30 is: 7,209.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.10 : 10,708.65 = 4,806.30 : x
  2. Step 2: Convert to fraction form
    7,139.10/10,708.65 = 4,806.30/x
  3. Step 3: Cross multiply
    7,139.10x = 10,708.65 × 4,806.30
  4. Step 4: Simplify right side
    7,139.10x = 51,468,984.50
  5. Step 5: Solve for x
    x = 51,468,984.50/7,139.10
  6. Step 6: Final answer
    x = 7,209.45

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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.