Home / 1,417.64-2,123.04-1,388.84

Finding the Fourth Proportional to 1,417.64, 2,123.04 and 1,388.84

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Solution

The fourth proportional to 1,417.64, 2,123.04 and 1,388.84 is: 2,079.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.64 : 2,123.04 = 1,388.84 : x
  2. Step 2: Convert to fraction form
    1,417.64/2,123.04 = 1,388.84/x
  3. Step 3: Cross multiply
    1,417.64x = 2,123.04 × 1,388.84
  4. Step 4: Simplify right side
    1,417.64x = 2,948,562.87
  5. Step 5: Solve for x
    x = 2,948,562.87/1,417.64
  6. Step 6: Final answer
    x = 2,079.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.