Home / 2,631.40-3,631.80-1,569.23

Finding the Fourth Proportional to 2,631.40, 3,631.80 and 1,569.23

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Solution

The fourth proportional to 2,631.40, 3,631.80 and 1,569.23 is: 2,165.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.40 : 3,631.80 = 1,569.23 : x
  2. Step 2: Convert to fraction form
    2,631.40/3,631.80 = 1,569.23/x
  3. Step 3: Cross multiply
    2,631.40x = 3,631.80 × 1,569.23
  4. Step 4: Simplify right side
    2,631.40x = 5,699,121.67
  5. Step 5: Solve for x
    x = 5,699,121.67/2,631.40
  6. Step 6: Final answer
    x = 2,165.82

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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.