Home / 1,690.31-2,333.66-1,102.52

Finding the Fourth Proportional to 1,690.31, 2,333.66 and 1,102.52

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Solution

The fourth proportional to 1,690.31, 2,333.66 and 1,102.52 is: 1,522.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.31 : 2,333.66 = 1,102.52 : x
  2. Step 2: Convert to fraction form
    1,690.31/2,333.66 = 1,102.52/x
  3. Step 3: Cross multiply
    1,690.31x = 2,333.66 × 1,102.52
  4. Step 4: Simplify right side
    1,690.31x = 2,572,889.64
  5. Step 5: Solve for x
    x = 2,572,889.64/1,690.31
  6. Step 6: Final answer
    x = 1,522.15

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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.