Home / 5,657.13-7,806.85-3,139.18

Finding the Fourth Proportional to 5,657.13, 7,806.85 and 3,139.18

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Solution

The fourth proportional to 5,657.13, 7,806.85 and 3,139.18 is: 4,332.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,657.13 : 7,806.85 = 3,139.18 : x
  2. Step 2: Convert to fraction form
    5,657.13/7,806.85 = 3,139.18/x
  3. Step 3: Cross multiply
    5,657.13x = 7,806.85 × 3,139.18
  4. Step 4: Simplify right side
    5,657.13x = 24,507,080.02
  5. Step 5: Solve for x
    x = 24,507,080.02/5,657.13
  6. Step 6: Final answer
    x = 4,332.07

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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.