Home / 7,778.68-10,727.49-5,125.12

Finding the Fourth Proportional to 7,778.68, 10,727.49 and 5,125.12

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Solution

The fourth proportional to 7,778.68, 10,727.49 and 5,125.12 is: 7,068.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.68 : 10,727.49 = 5,125.12 : x
  2. Step 2: Convert to fraction form
    7,778.68/10,727.49 = 5,125.12/x
  3. Step 3: Cross multiply
    7,778.68x = 10,727.49 × 5,125.12
  4. Step 4: Simplify right side
    7,778.68x = 54,979,673.55
  5. Step 5: Solve for x
    x = 54,979,673.55/7,778.68
  6. Step 6: Final answer
    x = 7,068.00

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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.