Home / 1,521.57-2,095.56-1,422.75

Finding the Fourth Proportional to 1,521.57, 2,095.56 and 1,422.75

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Solution

The fourth proportional to 1,521.57, 2,095.56 and 1,422.75 is: 1,959.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.57 : 2,095.56 = 1,422.75 : x
  2. Step 2: Convert to fraction form
    1,521.57/2,095.56 = 1,422.75/x
  3. Step 3: Cross multiply
    1,521.57x = 2,095.56 × 1,422.75
  4. Step 4: Simplify right side
    1,521.57x = 2,981,457.99
  5. Step 5: Solve for x
    x = 2,981,457.99/1,521.57
  6. Step 6: Final answer
    x = 1,959.46

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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.