Home / 7,121.16-10,721.25-5,569.56

Finding the Fourth Proportional to 7,121.16, 10,721.25 and 5,569.56

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Solution

The fourth proportional to 7,121.16, 10,721.25 and 5,569.56 is: 8,385.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.16 : 10,721.25 = 5,569.56 : x
  2. Step 2: Convert to fraction form
    7,121.16/10,721.25 = 5,569.56/x
  3. Step 3: Cross multiply
    7,121.16x = 10,721.25 × 5,569.56
  4. Step 4: Simplify right side
    7,121.16x = 59,712,645.15
  5. Step 5: Solve for x
    x = 59,712,645.15/7,121.16
  6. Step 6: Final answer
    x = 8,385.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.