Home / 1,715.14-2,562.88-1,290.22

Finding the Fourth Proportional to 1,715.14, 2,562.88 and 1,290.22

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Solution

The fourth proportional to 1,715.14, 2,562.88 and 1,290.22 is: 1,927.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.14 : 2,562.88 = 1,290.22 : x
  2. Step 2: Convert to fraction form
    1,715.14/2,562.88 = 1,290.22/x
  3. Step 3: Cross multiply
    1,715.14x = 2,562.88 × 1,290.22
  4. Step 4: Simplify right side
    1,715.14x = 3,306,679.03
  5. Step 5: Solve for x
    x = 3,306,679.03/1,715.14
  6. Step 6: Final answer
    x = 1,927.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.