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Finding the Fourth Proportional to 1,699.62, 2,344.63 and 1,140.21

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Solution

The fourth proportional to 1,699.62, 2,344.63 and 1,140.21 is: 1,572.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,699.62 : 2,344.63 = 1,140.21 : x
  2. Step 2: Convert to fraction form
    1,699.62/2,344.63 = 1,140.21/x
  3. Step 3: Cross multiply
    1,699.62x = 2,344.63 × 1,140.21
  4. Step 4: Simplify right side
    1,699.62x = 2,673,370.57
  5. Step 5: Solve for x
    x = 2,673,370.57/1,699.62
  6. Step 6: Final answer
    x = 1,572.92

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1.5x scale

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.