Home / 4,987.13-6,875.84-4,087.61

Finding the Fourth Proportional to 4,987.13, 6,875.84 and 4,087.61

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Solution

The fourth proportional to 4,987.13, 6,875.84 and 4,087.61 is: 5,635.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.13 : 6,875.84 = 4,087.61 : x
  2. Step 2: Convert to fraction form
    4,987.13/6,875.84 = 4,087.61/x
  3. Step 3: Cross multiply
    4,987.13x = 6,875.84 × 4,087.61
  4. Step 4: Simplify right side
    4,987.13x = 28,105,697.53
  5. Step 5: Solve for x
    x = 28,105,697.53/4,987.13
  6. Step 6: Final answer
    x = 5,635.65

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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.