Home / 1,529.40-2,291.15-913.60

Finding the Fourth Proportional to 1,529.40, 2,291.15 and 913.60

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Solution

The fourth proportional to 1,529.40, 2,291.15 and 913.60 is: 1,368.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.40 : 2,291.15 = 913.60 : x
  2. Step 2: Convert to fraction form
    1,529.40/2,291.15 = 913.60/x
  3. Step 3: Cross multiply
    1,529.40x = 2,291.15 × 913.60
  4. Step 4: Simplify right side
    1,529.40x = 2,093,191.20
  5. Step 5: Solve for x
    x = 2,093,191.20/1,529.40
  6. Step 6: Final answer
    x = 1,368.64

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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.