Home / 1,657.10-2,487.45-928.10

Finding the Fourth Proportional to 1,657.10, 2,487.45 and 928.10

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Solution

The fourth proportional to 1,657.10, 2,487.45 and 928.10 is: 1,393.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.10 : 2,487.45 = 928.10 : x
  2. Step 2: Convert to fraction form
    1,657.10/2,487.45 = 928.10/x
  3. Step 3: Cross multiply
    1,657.10x = 2,487.45 × 928.10
  4. Step 4: Simplify right side
    1,657.10x = 2,308,602.35
  5. Step 5: Solve for x
    x = 2,308,602.35/1,657.10
  6. Step 6: Final answer
    x = 1,393.16

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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.