Home / 9,152.46-12,629.95-5,172.80

Finding the Fourth Proportional to 9,152.46, 12,629.95 and 5,172.80

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Solution

The fourth proportional to 9,152.46, 12,629.95 and 5,172.80 is: 7,138.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,152.46 : 12,629.95 = 5,172.80 : x
  2. Step 2: Convert to fraction form
    9,152.46/12,629.95 = 5,172.80/x
  3. Step 3: Cross multiply
    9,152.46x = 12,629.95 × 5,172.80
  4. Step 4: Simplify right side
    9,152.46x = 65,332,129.28
  5. Step 5: Solve for x
    x = 65,332,129.28/9,152.46
  6. Step 6: Final answer
    x = 7,138.20

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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.