Home / 7,081.28-9,776.40-4,987.52

Finding the Fourth Proportional to 7,081.28, 9,776.40 and 4,987.52

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Solution

The fourth proportional to 7,081.28, 9,776.40 and 4,987.52 is: 6,885.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.28 : 9,776.40 = 4,987.52 : x
  2. Step 2: Convert to fraction form
    7,081.28/9,776.40 = 4,987.52/x
  3. Step 3: Cross multiply
    7,081.28x = 9,776.40 × 4,987.52
  4. Step 4: Simplify right side
    7,081.28x = 48,759,990.53
  5. Step 5: Solve for x
    x = 48,759,990.53/7,081.28
  6. Step 6: Final answer
    x = 6,885.76

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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.