Home / 1,145.60-1,583.52-1,054.88

Finding the Fourth Proportional to 1,145.60, 1,583.52 and 1,054.88

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Solution

The fourth proportional to 1,145.60, 1,583.52 and 1,054.88 is: 1,458.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145.60 : 1,583.52 = 1,054.88 : x
  2. Step 2: Convert to fraction form
    1,145.60/1,583.52 = 1,054.88/x
  3. Step 3: Cross multiply
    1,145.60x = 1,583.52 × 1,054.88
  4. Step 4: Simplify right side
    1,145.60x = 1,670,423.58
  5. Step 5: Solve for x
    x = 1,670,423.58/1,145.60
  6. Step 6: Final answer
    x = 1,458.12

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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.