Home / 1,125.13-1,552.70-621.04

Finding the Fourth Proportional to 1,125.13, 1,552.70 and 621.04

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Solution

The fourth proportional to 1,125.13, 1,552.70 and 621.04 is: 857.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.13 : 1,552.70 = 621.04 : x
  2. Step 2: Convert to fraction form
    1,125.13/1,552.70 = 621.04/x
  3. Step 3: Cross multiply
    1,125.13x = 1,552.70 × 621.04
  4. Step 4: Simplify right side
    1,125.13x = 964,288.81
  5. Step 5: Solve for x
    x = 964,288.81/1,125.13
  6. Step 6: Final answer
    x = 857.05

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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.