Home / 1,572.40-2,353.20-1,442.80

Finding the Fourth Proportional to 1,572.40, 2,353.20 and 1,442.80

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Solution

The fourth proportional to 1,572.40, 2,353.20 and 1,442.80 is: 2,159.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.40 : 2,353.20 = 1,442.80 : x
  2. Step 2: Convert to fraction form
    1,572.40/2,353.20 = 1,442.80/x
  3. Step 3: Cross multiply
    1,572.40x = 2,353.20 × 1,442.80
  4. Step 4: Simplify right side
    1,572.40x = 3,395,196.96
  5. Step 5: Solve for x
    x = 3,395,196.96/1,572.40
  6. Step 6: Final answer
    x = 2,159.25

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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.