Home / 1,349.19-2,020.14-860.76

Finding the Fourth Proportional to 1,349.19, 2,020.14 and 860.76

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Solution

The fourth proportional to 1,349.19, 2,020.14 and 860.76 is: 1,288.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.19 : 2,020.14 = 860.76 : x
  2. Step 2: Convert to fraction form
    1,349.19/2,020.14 = 860.76/x
  3. Step 3: Cross multiply
    1,349.19x = 2,020.14 × 860.76
  4. Step 4: Simplify right side
    1,349.19x = 1,738,855.71
  5. Step 5: Solve for x
    x = 1,738,855.71/1,349.19
  6. Step 6: Final answer
    x = 1,288.81

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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.