Home / 7,812.08-10,781.88-4,454.90

Finding the Fourth Proportional to 7,812.08, 10,781.88 and 4,454.90

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Solution

The fourth proportional to 7,812.08, 10,781.88 and 4,454.90 is: 6,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.08 : 10,781.88 = 4,454.90 : x
  2. Step 2: Convert to fraction form
    7,812.08/10,781.88 = 4,454.90/x
  3. Step 3: Cross multiply
    7,812.08x = 10,781.88 × 4,454.90
  4. Step 4: Simplify right side
    7,812.08x = 48,032,197.21
  5. Step 5: Solve for x
    x = 48,032,197.21/7,812.08
  6. Step 6: Final answer
    x = 6,148.45

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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.