Home / 9,376.78-12,939.60-5,184.76

Finding the Fourth Proportional to 9,376.78, 12,939.60 and 5,184.76

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Solution

The fourth proportional to 9,376.78, 12,939.60 and 5,184.76 is: 7,154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,376.78 : 12,939.60 = 5,184.76 : x
  2. Step 2: Convert to fraction form
    9,376.78/12,939.60 = 5,184.76/x
  3. Step 3: Cross multiply
    9,376.78x = 12,939.60 × 5,184.76
  4. Step 4: Simplify right side
    9,376.78x = 67,088,720.50
  5. Step 5: Solve for x
    x = 67,088,720.50/9,376.78
  6. Step 6: Final answer
    x = 7,154.77

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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.