Home / 2,920.50-4,378.14-1,166.76

Finding the Fourth Proportional to 2,920.50, 4,378.14 and 1,166.76

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Solution

The fourth proportional to 2,920.50, 4,378.14 and 1,166.76 is: 1,749.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.50 : 4,378.14 = 1,166.76 : x
  2. Step 2: Convert to fraction form
    2,920.50/4,378.14 = 1,166.76/x
  3. Step 3: Cross multiply
    2,920.50x = 4,378.14 × 1,166.76
  4. Step 4: Simplify right side
    2,920.50x = 5,108,238.63
  5. Step 5: Solve for x
    x = 5,108,238.63/2,920.50
  6. Step 6: Final answer
    x = 1,749.10

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Half scale
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Double scale
Find fourth proportional to 2,921.50, 4,379.64 and 1,167.76
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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.