Home / 1,663.12-2,290.08-1,442.08

Finding the Fourth Proportional to 1,663.12, 2,290.08 and 1,442.08

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Solution

The fourth proportional to 1,663.12, 2,290.08 and 1,442.08 is: 1,985.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.12 : 2,290.08 = 1,442.08 : x
  2. Step 2: Convert to fraction form
    1,663.12/2,290.08 = 1,442.08/x
  3. Step 3: Cross multiply
    1,663.12x = 2,290.08 × 1,442.08
  4. Step 4: Simplify right side
    1,663.12x = 3,302,478.57
  5. Step 5: Solve for x
    x = 3,302,478.57/1,663.12
  6. Step 6: Final answer
    x = 1,985.71

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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.