Home / 4,322.40-6,479.55-2,345.13

Finding the Fourth Proportional to 4,322.40, 6,479.55 and 2,345.13

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Solution

The fourth proportional to 4,322.40, 6,479.55 and 2,345.13 is: 3,515.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,322.40 : 6,479.55 = 2,345.13 : x
  2. Step 2: Convert to fraction form
    4,322.40/6,479.55 = 2,345.13/x
  3. Step 3: Cross multiply
    4,322.40x = 6,479.55 × 2,345.13
  4. Step 4: Simplify right side
    4,322.40x = 15,195,387.09
  5. Step 5: Solve for x
    x = 15,195,387.09/4,322.40
  6. Step 6: Final answer
    x = 3,515.50

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Double scale
Find fourth proportional to 4,323.40, 6,481.05 and 2,346.13
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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.