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Finding the Fourth Proportional to 6,457.52, 9,686.39 and 2,947.39

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Solution

The fourth proportional to 6,457.52, 9,686.39 and 2,947.39 is: 4,421.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,457.52 : 9,686.39 = 2,947.39 : x
  2. Step 2: Convert to fraction form
    6,457.52/9,686.39 = 2,947.39/x
  3. Step 3: Cross multiply
    6,457.52x = 9,686.39 × 2,947.39
  4. Step 4: Simplify right side
    6,457.52x = 28,549,530.07
  5. Step 5: Solve for x
    x = 28,549,530.07/6,457.52
  6. Step 6: Final answer
    x = 4,421.13

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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.