Home / 9,079.78-12,530.40-5,100.70

Finding the Fourth Proportional to 9,079.78, 12,530.40 and 5,100.70

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Solution

The fourth proportional to 9,079.78, 12,530.40 and 5,100.70 is: 7,039.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,079.78 : 12,530.40 = 5,100.70 : x
  2. Step 2: Convert to fraction form
    9,079.78/12,530.40 = 5,100.70/x
  3. Step 3: Cross multiply
    9,079.78x = 12,530.40 × 5,100.70
  4. Step 4: Simplify right side
    9,079.78x = 63,913,811.28
  5. Step 5: Solve for x
    x = 63,913,811.28/9,079.78
  6. Step 6: Final answer
    x = 7,039.14

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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.