Home / 1,627.16-2,244.96-928.40

Finding the Fourth Proportional to 1,627.16, 2,244.96 and 928.40

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Solution

The fourth proportional to 1,627.16, 2,244.96 and 928.40 is: 1,280.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.16 : 2,244.96 = 928.40 : x
  2. Step 2: Convert to fraction form
    1,627.16/2,244.96 = 928.40/x
  3. Step 3: Cross multiply
    1,627.16x = 2,244.96 × 928.40
  4. Step 4: Simplify right side
    1,627.16x = 2,084,220.86
  5. Step 5: Solve for x
    x = 2,084,220.86/1,627.16
  6. Step 6: Final answer
    x = 1,280.89

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1.5x scale

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.