Home / 3,345.64-4,612.44-2,820.76

Finding the Fourth Proportional to 3,345.64, 4,612.44 and 2,820.76

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Solution

The fourth proportional to 3,345.64, 4,612.44 and 2,820.76 is: 3,888.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,345.64 : 4,612.44 = 2,820.76 : x
  2. Step 2: Convert to fraction form
    3,345.64/4,612.44 = 2,820.76/x
  3. Step 3: Cross multiply
    3,345.64x = 4,612.44 × 2,820.76
  4. Step 4: Simplify right side
    3,345.64x = 13,010,585.30
  5. Step 5: Solve for x
    x = 13,010,585.30/3,345.64
  6. Step 6: Final answer
    x = 3,888.82

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Half scale
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Double scale
Find fourth proportional to 3,346.64, 4,613.82 and 2,821.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.