Home / 1,153.26-1,587.46-1,005.63

Finding the Fourth Proportional to 1,153.26, 1,587.46 and 1,005.63

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Solution

The fourth proportional to 1,153.26, 1,587.46 and 1,005.63 is: 1,384.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153.26 : 1,587.46 = 1,005.63 : x
  2. Step 2: Convert to fraction form
    1,153.26/1,587.46 = 1,005.63/x
  3. Step 3: Cross multiply
    1,153.26x = 1,587.46 × 1,005.63
  4. Step 4: Simplify right side
    1,153.26x = 1,596,397.40
  5. Step 5: Solve for x
    x = 1,596,397.40/1,153.26
  6. Step 6: Final answer
    x = 1,384.25

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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.