Home / 1,152.25-1,590.66-1,111.21

Finding the Fourth Proportional to 1,152.25, 1,590.66 and 1,111.21

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Solution

The fourth proportional to 1,152.25, 1,590.66 and 1,111.21 is: 1,534.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152.25 : 1,590.66 = 1,111.21 : x
  2. Step 2: Convert to fraction form
    1,152.25/1,590.66 = 1,111.21/x
  3. Step 3: Cross multiply
    1,152.25x = 1,590.66 × 1,111.21
  4. Step 4: Simplify right side
    1,152.25x = 1,767,557.30
  5. Step 5: Solve for x
    x = 1,767,557.30/1,152.25
  6. Step 6: Final answer
    x = 1,534.01

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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.