Home / 3,520.15-5,279.58-1,298.50

Finding the Fourth Proportional to 3,520.15, 5,279.58 and 1,298.50

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Solution

The fourth proportional to 3,520.15, 5,279.58 and 1,298.50 is: 1,947.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.15 : 5,279.58 = 1,298.50 : x
  2. Step 2: Convert to fraction form
    3,520.15/5,279.58 = 1,298.50/x
  3. Step 3: Cross multiply
    3,520.15x = 5,279.58 × 1,298.50
  4. Step 4: Simplify right side
    3,520.15x = 6,855,534.63
  5. Step 5: Solve for x
    x = 6,855,534.63/3,520.15
  6. Step 6: Final answer
    x = 1,947.51

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Double scale
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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.