Home / 1,641.02-2,265.30-977.90

Finding the Fourth Proportional to 1,641.02, 2,265.30 and 977.90

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Solution

The fourth proportional to 1,641.02, 2,265.30 and 977.90 is: 1,349.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641.02 : 2,265.30 = 977.90 : x
  2. Step 2: Convert to fraction form
    1,641.02/2,265.30 = 977.90/x
  3. Step 3: Cross multiply
    1,641.02x = 2,265.30 × 977.90
  4. Step 4: Simplify right side
    1,641.02x = 2,215,225.54
  5. Step 5: Solve for x
    x = 2,215,225.54/1,641.02
  6. Step 6: Final answer
    x = 1,349.91

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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.