Home / 1,522.13-2,100.51-1,311.93

Finding the Fourth Proportional to 1,522.13, 2,100.51 and 1,311.93

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Solution

The fourth proportional to 1,522.13, 2,100.51 and 1,311.93 is: 1,810.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,522.13 : 2,100.51 = 1,311.93 : x
  2. Step 2: Convert to fraction form
    1,522.13/2,100.51 = 1,311.93/x
  3. Step 3: Cross multiply
    1,522.13x = 2,100.51 × 1,311.93
  4. Step 4: Simplify right side
    1,522.13x = 2,755,722.08
  5. Step 5: Solve for x
    x = 2,755,722.08/1,522.13
  6. Step 6: Final answer
    x = 1,810.44

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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.