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Finding the Fourth Proportional to 2,898.75, 4,000.28 and 1,656.75

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Solution

The fourth proportional to 2,898.75, 4,000.28 and 1,656.75 is: 2,286.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.75 : 4,000.28 = 1,656.75 : x
  2. Step 2: Convert to fraction form
    2,898.75/4,000.28 = 1,656.75/x
  3. Step 3: Cross multiply
    2,898.75x = 4,000.28 × 1,656.75
  4. Step 4: Simplify right side
    2,898.75x = 6,627,455.61
  5. Step 5: Solve for x
    x = 6,627,455.61/2,898.75
  6. Step 6: Final answer
    x = 2,286.32

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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.