Home / 4,259.49-6,390.20-1,298.20

Finding the Fourth Proportional to 4,259.49, 6,390.20 and 1,298.20

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Solution

The fourth proportional to 4,259.49, 6,390.20 and 1,298.20 is: 1,947.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,259.49 : 6,390.20 = 1,298.20 : x
  2. Step 2: Convert to fraction form
    4,259.49/6,390.20 = 1,298.20/x
  3. Step 3: Cross multiply
    4,259.49x = 6,390.20 × 1,298.20
  4. Step 4: Simplify right side
    4,259.49x = 8,295,725.69
  5. Step 5: Solve for x
    x = 8,295,725.69/4,259.49
  6. Step 6: Final answer
    x = 1,947.59

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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.