Home / 1,121.33-1,681.51-601.18

Finding the Fourth Proportional to 1,121.33, 1,681.51 and 601.18

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Solution

The fourth proportional to 1,121.33, 1,681.51 and 601.18 is: 901.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121.33 : 1,681.51 = 601.18 : x
  2. Step 2: Convert to fraction form
    1,121.33/1,681.51 = 601.18/x
  3. Step 3: Cross multiply
    1,121.33x = 1,681.51 × 601.18
  4. Step 4: Simplify right side
    1,121.33x = 1,010,890.18
  5. Step 5: Solve for x
    x = 1,010,890.18/1,121.33
  6. Step 6: Final answer
    x = 901.51

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Half scale
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Double scale
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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.