Home / 1,721.15-2,374.89-974.95

Finding the Fourth Proportional to 1,721.15, 2,374.89 and 974.95

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Solution

The fourth proportional to 1,721.15, 2,374.89 and 974.95 is: 1,345.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.15 : 2,374.89 = 974.95 : x
  2. Step 2: Convert to fraction form
    1,721.15/2,374.89 = 974.95/x
  3. Step 3: Cross multiply
    1,721.15x = 2,374.89 × 974.95
  4. Step 4: Simplify right side
    1,721.15x = 2,315,411.00
  5. Step 5: Solve for x
    x = 2,315,411.00/1,721.15
  6. Step 6: Final answer
    x = 1,345.27

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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.