Home / 1,472.17-2,208.26-860.15

Finding the Fourth Proportional to 1,472.17, 2,208.26 and 860.15

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Solution

The fourth proportional to 1,472.17, 2,208.26 and 860.15 is: 1,290.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,472.17 : 2,208.26 = 860.15 : x
  2. Step 2: Convert to fraction form
    1,472.17/2,208.26 = 860.15/x
  3. Step 3: Cross multiply
    1,472.17x = 2,208.26 × 860.15
  4. Step 4: Simplify right side
    1,472.17x = 1,899,434.84
  5. Step 5: Solve for x
    x = 1,899,434.84/1,472.17
  6. Step 6: Final answer
    x = 1,290.23

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1.5x scale

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.