Home / 1,135.60-1,566.72-841.36

Finding the Fourth Proportional to 1,135.60, 1,566.72 and 841.36

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Solution

The fourth proportional to 1,135.60, 1,566.72 and 841.36 is: 1,160.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.60 : 1,566.72 = 841.36 : x
  2. Step 2: Convert to fraction form
    1,135.60/1,566.72 = 841.36/x
  3. Step 3: Cross multiply
    1,135.60x = 1,566.72 × 841.36
  4. Step 4: Simplify right side
    1,135.60x = 1,318,175.54
  5. Step 5: Solve for x
    x = 1,318,175.54/1,135.60
  6. Step 6: Final answer
    x = 1,160.77

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1.5x scale

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.