Home / 9,139.13-12,612.02-4,947.38

Finding the Fourth Proportional to 9,139.13, 12,612.02 and 4,947.38

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Solution

The fourth proportional to 9,139.13, 12,612.02 and 4,947.38 is: 6,827.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.13 : 12,612.02 = 4,947.38 : x
  2. Step 2: Convert to fraction form
    9,139.13/12,612.02 = 4,947.38/x
  3. Step 3: Cross multiply
    9,139.13x = 12,612.02 × 4,947.38
  4. Step 4: Simplify right side
    9,139.13x = 62,396,455.51
  5. Step 5: Solve for x
    x = 62,396,455.51/9,139.13
  6. Step 6: Final answer
    x = 6,827.40

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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.