Home / 1,407.51-2,108.79-1,149.12

Finding the Fourth Proportional to 1,407.51, 2,108.79 and 1,149.12

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Solution

The fourth proportional to 1,407.51, 2,108.79 and 1,149.12 is: 1,721.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407.51 : 2,108.79 = 1,149.12 : x
  2. Step 2: Convert to fraction form
    1,407.51/2,108.79 = 1,149.12/x
  3. Step 3: Cross multiply
    1,407.51x = 2,108.79 × 1,149.12
  4. Step 4: Simplify right side
    1,407.51x = 2,423,252.76
  5. Step 5: Solve for x
    x = 2,423,252.76/1,407.51
  6. Step 6: Final answer
    x = 1,721.66

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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.