Home / 3,680.19-5,071.86-3,118.86

Finding the Fourth Proportional to 3,680.19, 5,071.86 and 3,118.86

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Solution

The fourth proportional to 3,680.19, 5,071.86 and 3,118.86 is: 4,298.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.19 : 5,071.86 = 3,118.86 : x
  2. Step 2: Convert to fraction form
    3,680.19/5,071.86 = 3,118.86/x
  3. Step 3: Cross multiply
    3,680.19x = 5,071.86 × 3,118.86
  4. Step 4: Simplify right side
    3,680.19x = 15,818,421.28
  5. Step 5: Solve for x
    x = 15,818,421.28/3,680.19
  6. Step 6: Final answer
    x = 4,298.26

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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.