Home / 9,178.95-12,666.80-4,987.17

Finding the Fourth Proportional to 9,178.95, 12,666.80 and 4,987.17

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Solution

The fourth proportional to 9,178.95, 12,666.80 and 4,987.17 is: 6,882.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.95 : 12,666.80 = 4,987.17 : x
  2. Step 2: Convert to fraction form
    9,178.95/12,666.80 = 4,987.17/x
  3. Step 3: Cross multiply
    9,178.95x = 12,666.80 × 4,987.17
  4. Step 4: Simplify right side
    9,178.95x = 63,171,460.02
  5. Step 5: Solve for x
    x = 63,171,460.02/9,178.95
  6. Step 6: Final answer
    x = 6,882.21

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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.