Home / 9,151.02-12,628.32-5,172.16

Finding the Fourth Proportional to 9,151.02, 12,628.32 and 5,172.16

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Solution

The fourth proportional to 9,151.02, 12,628.32 and 5,172.16 is: 7,137.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,151.02 : 12,628.32 = 5,172.16 : x
  2. Step 2: Convert to fraction form
    9,151.02/12,628.32 = 5,172.16/x
  3. Step 3: Cross multiply
    9,151.02x = 12,628.32 × 5,172.16
  4. Step 4: Simplify right side
    9,151.02x = 65,315,691.57
  5. Step 5: Solve for x
    x = 65,315,691.57/9,151.02
  6. Step 6: Final answer
    x = 7,137.53

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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.