Home / 9,117.32-12,583.08-5,139.68

Finding the Fourth Proportional to 9,117.32, 12,583.08 and 5,139.68

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Solution

The fourth proportional to 9,117.32, 12,583.08 and 5,139.68 is: 7,093.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,117.32 : 12,583.08 = 5,139.68 : x
  2. Step 2: Convert to fraction form
    9,117.32/12,583.08 = 5,139.68/x
  3. Step 3: Cross multiply
    9,117.32x = 12,583.08 × 5,139.68
  4. Step 4: Simplify right side
    9,117.32x = 64,672,941.70
  5. Step 5: Solve for x
    x = 64,672,941.70/9,117.32
  6. Step 6: Final answer
    x = 7,093.42

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Double scale
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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.