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Finding the Fourth Proportional to 1,736.80, 2,395.80 and 1,147.12

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Solution

The fourth proportional to 1,736.80, 2,395.80 and 1,147.12 is: 1,582.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,736.80 : 2,395.80 = 1,147.12 : x
  2. Step 2: Convert to fraction form
    1,736.80/2,395.80 = 1,147.12/x
  3. Step 3: Cross multiply
    1,736.80x = 2,395.80 × 1,147.12
  4. Step 4: Simplify right side
    1,736.80x = 2,748,270.10
  5. Step 5: Solve for x
    x = 2,748,270.10/1,736.80
  6. Step 6: Final answer
    x = 1,582.38

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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.