Home / 1,125.15-1,552.69-621.01

Finding the Fourth Proportional to 1,125.15, 1,552.69 and 621.01

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Solution

The fourth proportional to 1,125.15, 1,552.69 and 621.01 is: 856.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.15 : 1,552.69 = 621.01 : x
  2. Step 2: Convert to fraction form
    1,125.15/1,552.69 = 621.01/x
  3. Step 3: Cross multiply
    1,125.15x = 1,552.69 × 621.01
  4. Step 4: Simplify right side
    1,125.15x = 964,231.75
  5. Step 5: Solve for x
    x = 964,231.75/1,125.15
  6. Step 6: Final answer
    x = 856.98

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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.