Home / 2,915.60-4,023.96-1,656.78

Finding the Fourth Proportional to 2,915.60, 4,023.96 and 1,656.78

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Solution

The fourth proportional to 2,915.60, 4,023.96 and 1,656.78 is: 2,286.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.60 : 4,023.96 = 1,656.78 : x
  2. Step 2: Convert to fraction form
    2,915.60/4,023.96 = 1,656.78/x
  3. Step 3: Cross multiply
    2,915.60x = 4,023.96 × 1,656.78
  4. Step 4: Simplify right side
    2,915.60x = 6,666,816.45
  5. Step 5: Solve for x
    x = 6,666,816.45/2,915.60
  6. Step 6: Final answer
    x = 2,286.60

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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.