Home / 1,582.30-2,373.49-428.04

Finding the Fourth Proportional to 1,582.30, 2,373.49 and 428.04

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Solution

The fourth proportional to 1,582.30, 2,373.49 and 428.04 is: 642.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,582.30 : 2,373.49 = 428.04 : x
  2. Step 2: Convert to fraction form
    1,582.30/2,373.49 = 428.04/x
  3. Step 3: Cross multiply
    1,582.30x = 2,373.49 × 428.04
  4. Step 4: Simplify right side
    1,582.30x = 1,015,948.66
  5. Step 5: Solve for x
    x = 1,015,948.66/1,582.30
  6. Step 6: Final answer
    x = 642.07

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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.