Home / 9,158.54-12,639.05-5,180.27

Finding the Fourth Proportional to 9,158.54, 12,639.05 and 5,180.27

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Solution

The fourth proportional to 9,158.54, 12,639.05 and 5,180.27 is: 7,148.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,158.54 : 12,639.05 = 5,180.27 : x
  2. Step 2: Convert to fraction form
    9,158.54/12,639.05 = 5,180.27/x
  3. Step 3: Cross multiply
    9,158.54x = 12,639.05 × 5,180.27
  4. Step 4: Simplify right side
    9,158.54x = 65,473,602.45
  5. Step 5: Solve for x
    x = 65,473,602.45/9,158.54
  6. Step 6: Final answer
    x = 7,148.91

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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.