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Finding the Fourth Proportional to 1,775.70, 2,449.71 and 1,112.10

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Solution

The fourth proportional to 1,775.70, 2,449.71 and 1,112.10 is: 1,534.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.70 : 2,449.71 = 1,112.10 : x
  2. Step 2: Convert to fraction form
    1,775.70/2,449.71 = 1,112.10/x
  3. Step 3: Cross multiply
    1,775.70x = 2,449.71 × 1,112.10
  4. Step 4: Simplify right side
    1,775.70x = 2,724,322.49
  5. Step 5: Solve for x
    x = 2,724,322.49/1,775.70
  6. Step 6: Final answer
    x = 1,534.22

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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.