Home / 9,178.20-12,665.76-4,986.42

Finding the Fourth Proportional to 9,178.20, 12,665.76 and 4,986.42

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Solution

The fourth proportional to 9,178.20, 12,665.76 and 4,986.42 is: 6,881.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.20 : 12,665.76 = 4,986.42 : x
  2. Step 2: Convert to fraction form
    9,178.20/12,665.76 = 4,986.42/x
  3. Step 3: Cross multiply
    9,178.20x = 12,665.76 × 4,986.42
  4. Step 4: Simplify right side
    9,178.20x = 63,156,798.98
  5. Step 5: Solve for x
    x = 63,156,798.98/9,178.20
  6. Step 6: Final answer
    x = 6,881.17

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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.