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Finding the Fourth Proportional to 1,559.60, 2,152.30 and 887.52

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Solution

The fourth proportional to 1,559.60, 2,152.30 and 887.52 is: 1,224.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.60 : 2,152.30 = 887.52 : x
  2. Step 2: Convert to fraction form
    1,559.60/2,152.30 = 887.52/x
  3. Step 3: Cross multiply
    1,559.60x = 2,152.30 × 887.52
  4. Step 4: Simplify right side
    1,559.60x = 1,910,207.08
  5. Step 5: Solve for x
    x = 1,910,207.08/1,559.60
  6. Step 6: Final answer
    x = 1,224.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.