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Finding the Fourth Proportional to 2,320, 3,475.28 and 1,085.68

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Solution

The fourth proportional to 2,320, 3,475.28 and 1,085.68 is: 1,626.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320 : 3,475.28 = 1,085.68 : x
  2. Step 2: Convert to fraction form
    2,320/3,475.28 = 1,085.68/x
  3. Step 3: Cross multiply
    2,320x = 3,475.28 × 1,085.68
  4. Step 4: Simplify right side
    2,320x = 3,773,041.99
  5. Step 5: Solve for x
    x = 3,773,041.99/2,320
  6. Step 6: Final answer
    x = 1,626.31

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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.