Home / 6,513.17-8,987.15-3,860.15

Finding the Fourth Proportional to 6,513.17, 8,987.15 and 3,860.15

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Solution

The fourth proportional to 6,513.17, 8,987.15 and 3,860.15 is: 5,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,513.17 : 8,987.15 = 3,860.15 : x
  2. Step 2: Convert to fraction form
    6,513.17/8,987.15 = 3,860.15/x
  3. Step 3: Cross multiply
    6,513.17x = 8,987.15 × 3,860.15
  4. Step 4: Simplify right side
    6,513.17x = 34,691,711.79
  5. Step 5: Solve for x
    x = 34,691,711.79/6,513.17
  6. Step 6: Final answer
    x = 5,326.40

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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.