Home / 9,151.18-12,628.51-5,172.26

Finding the Fourth Proportional to 9,151.18, 12,628.51 and 5,172.26

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Solution

The fourth proportional to 9,151.18, 12,628.51 and 5,172.26 is: 7,137.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,151.18 : 12,628.51 = 5,172.26 : x
  2. Step 2: Convert to fraction form
    9,151.18/12,628.51 = 5,172.26/x
  3. Step 3: Cross multiply
    9,151.18x = 12,628.51 × 5,172.26
  4. Step 4: Simplify right side
    9,151.18x = 65,317,861.06
  5. Step 5: Solve for x
    x = 65,317,861.06/9,151.18
  6. Step 6: Final answer
    x = 7,137.65

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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.