Home / 1,542.03-2,312.83-979.21

Finding the Fourth Proportional to 1,542.03, 2,312.83 and 979.21

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Solution

The fourth proportional to 1,542.03, 2,312.83 and 979.21 is: 1,468.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.03 : 2,312.83 = 979.21 : x
  2. Step 2: Convert to fraction form
    1,542.03/2,312.83 = 979.21/x
  3. Step 3: Cross multiply
    1,542.03x = 2,312.83 × 979.21
  4. Step 4: Simplify right side
    1,542.03x = 2,264,746.26
  5. Step 5: Solve for x
    x = 2,264,746.26/1,542.03
  6. Step 6: Final answer
    x = 1,468.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.