Home / 1,528.68-2,290.63-1,115.92

Finding the Fourth Proportional to 1,528.68, 2,290.63 and 1,115.92

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Solution

The fourth proportional to 1,528.68, 2,290.63 and 1,115.92 is: 1,672.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.68 : 2,290.63 = 1,115.92 : x
  2. Step 2: Convert to fraction form
    1,528.68/2,290.63 = 1,115.92/x
  3. Step 3: Cross multiply
    1,528.68x = 2,290.63 × 1,115.92
  4. Step 4: Simplify right side
    1,528.68x = 2,556,159.83
  5. Step 5: Solve for x
    x = 2,556,159.83/1,528.68
  6. Step 6: Final answer
    x = 1,672.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.