Home / 9,178.42-12,666.15-4,986.70

Finding the Fourth Proportional to 9,178.42, 12,666.15 and 4,986.70

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Solution

The fourth proportional to 9,178.42, 12,666.15 and 4,986.70 is: 6,881.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.42 : 12,666.15 = 4,986.70 : x
  2. Step 2: Convert to fraction form
    9,178.42/12,666.15 = 4,986.70/x
  3. Step 3: Cross multiply
    9,178.42x = 12,666.15 × 4,986.70
  4. Step 4: Simplify right side
    9,178.42x = 63,162,290.21
  5. Step 5: Solve for x
    x = 63,162,290.21/9,178.42
  6. Step 6: Final answer
    x = 6,881.61

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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.