Home / 5,148.39-7,102.15-3,256.78

Finding the Fourth Proportional to 5,148.39, 7,102.15 and 3,256.78

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Solution

The fourth proportional to 5,148.39, 7,102.15 and 3,256.78 is: 4,492.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.39 : 7,102.15 = 3,256.78 : x
  2. Step 2: Convert to fraction form
    5,148.39/7,102.15 = 3,256.78/x
  3. Step 3: Cross multiply
    5,148.39x = 7,102.15 × 3,256.78
  4. Step 4: Simplify right side
    5,148.39x = 23,130,140.08
  5. Step 5: Solve for x
    x = 23,130,140.08/5,148.39
  6. Step 6: Final answer
    x = 4,492.69

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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.