Home / 7,085.11-9,778.87-5,403.52

Finding the Fourth Proportional to 7,085.11, 9,778.87 and 5,403.52

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Solution

The fourth proportional to 7,085.11, 9,778.87 and 5,403.52 is: 7,457.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085.11 : 9,778.87 = 5,403.52 : x
  2. Step 2: Convert to fraction form
    7,085.11/9,778.87 = 5,403.52/x
  3. Step 3: Cross multiply
    7,085.11x = 9,778.87 × 5,403.52
  4. Step 4: Simplify right side
    7,085.11x = 52,840,319.62
  5. Step 5: Solve for x
    x = 52,840,319.62/7,085.11
  6. Step 6: Final answer
    x = 7,457.94

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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.