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Finding the Fourth Proportional to 1,888.28, 2,602.62 and 1,445.22

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Solution

The fourth proportional to 1,888.28, 2,602.62 and 1,445.22 is: 1,991.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888.28 : 2,602.62 = 1,445.22 : x
  2. Step 2: Convert to fraction form
    1,888.28/2,602.62 = 1,445.22/x
  3. Step 3: Cross multiply
    1,888.28x = 2,602.62 × 1,445.22
  4. Step 4: Simplify right side
    1,888.28x = 3,761,358.48
  5. Step 5: Solve for x
    x = 3,761,358.48/1,888.28
  6. Step 6: Final answer
    x = 1,991.95

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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.