Home / 1,452.40-2,175.90-1,355.20

Finding the Fourth Proportional to 1,452.40, 2,175.90 and 1,355.20

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Solution

The fourth proportional to 1,452.40, 2,175.90 and 1,355.20 is: 2,030.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452.40 : 2,175.90 = 1,355.20 : x
  2. Step 2: Convert to fraction form
    1,452.40/2,175.90 = 1,355.20/x
  3. Step 3: Cross multiply
    1,452.40x = 2,175.90 × 1,355.20
  4. Step 4: Simplify right side
    1,452.40x = 2,948,779.68
  5. Step 5: Solve for x
    x = 2,948,779.68/1,452.40
  6. Step 6: Final answer
    x = 2,030.28

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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.