Home / 1,152.45-1,585.85-1,103.31

Finding the Fourth Proportional to 1,152.45, 1,585.85 and 1,103.31

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Solution

The fourth proportional to 1,152.45, 1,585.85 and 1,103.31 is: 1,518.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152.45 : 1,585.85 = 1,103.31 : x
  2. Step 2: Convert to fraction form
    1,152.45/1,585.85 = 1,103.31/x
  3. Step 3: Cross multiply
    1,152.45x = 1,585.85 × 1,103.31
  4. Step 4: Simplify right side
    1,152.45x = 1,749,678.65
  5. Step 5: Solve for x
    x = 1,749,678.65/1,152.45
  6. Step 6: Final answer
    x = 1,518.23

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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.