Home / 1,120.11-1,543.75-910.98

Finding the Fourth Proportional to 1,120.11, 1,543.75 and 910.98

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Solution

The fourth proportional to 1,120.11, 1,543.75 and 910.98 is: 1,255.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.11 : 1,543.75 = 910.98 : x
  2. Step 2: Convert to fraction form
    1,120.11/1,543.75 = 910.98/x
  3. Step 3: Cross multiply
    1,120.11x = 1,543.75 × 910.98
  4. Step 4: Simplify right side
    1,120.11x = 1,406,320.82
  5. Step 5: Solve for x
    x = 1,406,320.82/1,120.11
  6. Step 6: Final answer
    x = 1,255.52

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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.