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Finding the Fourth Proportional to 2,899.71, 4,001.64 and 1,640.76

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Solution

The fourth proportional to 2,899.71, 4,001.64 and 1,640.76 is: 2,264.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,899.71 : 4,001.64 = 1,640.76 : x
  2. Step 2: Convert to fraction form
    2,899.71/4,001.64 = 1,640.76/x
  3. Step 3: Cross multiply
    2,899.71x = 4,001.64 × 1,640.76
  4. Step 4: Simplify right side
    2,899.71x = 6,565,730.85
  5. Step 5: Solve for x
    x = 6,565,730.85/2,899.71
  6. Step 6: Final answer
    x = 2,264.27

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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.