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Finding the Fourth Proportional to 1,528, 2,109.36 and 1,473.28

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Solution

The fourth proportional to 1,528, 2,109.36 and 1,473.28 is: 2,033.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528 : 2,109.36 = 1,473.28 : x
  2. Step 2: Convert to fraction form
    1,528/2,109.36 = 1,473.28/x
  3. Step 3: Cross multiply
    1,528x = 2,109.36 × 1,473.28
  4. Step 4: Simplify right side
    1,528x = 3,107,677.90
  5. Step 5: Solve for x
    x = 3,107,677.90/1,528
  6. Step 6: Final answer
    x = 2,033.82

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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.