Home / 1,257.36-1,882.15-928.67

Finding the Fourth Proportional to 1,257.36, 1,882.15 and 928.67

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Solution

The fourth proportional to 1,257.36, 1,882.15 and 928.67 is: 1,390.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.36 : 1,882.15 = 928.67 : x
  2. Step 2: Convert to fraction form
    1,257.36/1,882.15 = 928.67/x
  3. Step 3: Cross multiply
    1,257.36x = 1,882.15 × 928.67
  4. Step 4: Simplify right side
    1,257.36x = 1,747,896.24
  5. Step 5: Solve for x
    x = 1,747,896.24/1,257.36
  6. Step 6: Final answer
    x = 1,390.13

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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.