Home / 1,427.60-2,142.48-964.28

Finding the Fourth Proportional to 1,427.60, 2,142.48 and 964.28

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Solution

The fourth proportional to 1,427.60, 2,142.48 and 964.28 is: 1,447.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.60 : 2,142.48 = 964.28 : x
  2. Step 2: Convert to fraction form
    1,427.60/2,142.48 = 964.28/x
  3. Step 3: Cross multiply
    1,427.60x = 2,142.48 × 964.28
  4. Step 4: Simplify right side
    1,427.60x = 2,065,950.61
  5. Step 5: Solve for x
    x = 2,065,950.61/1,427.60
  6. Step 6: Final answer
    x = 1,447.15

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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.