Home / 1,532.31-2,109.40-1,384.48

Finding the Fourth Proportional to 1,532.31, 2,109.40 and 1,384.48

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Solution

The fourth proportional to 1,532.31, 2,109.40 and 1,384.48 is: 1,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,532.31 : 2,109.40 = 1,384.48 : x
  2. Step 2: Convert to fraction form
    1,532.31/2,109.40 = 1,384.48/x
  3. Step 3: Cross multiply
    1,532.31x = 2,109.40 × 1,384.48
  4. Step 4: Simplify right side
    1,532.31x = 2,920,422.11
  5. Step 5: Solve for x
    x = 2,920,422.11/1,532.31
  6. Step 6: Final answer
    x = 1,905.90

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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.