Home / 5,351.84-7,385.47-3,115.02

Finding the Fourth Proportional to 5,351.84, 7,385.47 and 3,115.02

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Solution

The fourth proportional to 5,351.84, 7,385.47 and 3,115.02 is: 4,298.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,351.84 : 7,385.47 = 3,115.02 : x
  2. Step 2: Convert to fraction form
    5,351.84/7,385.47 = 3,115.02/x
  3. Step 3: Cross multiply
    5,351.84x = 7,385.47 × 3,115.02
  4. Step 4: Simplify right side
    5,351.84x = 23,005,886.76
  5. Step 5: Solve for x
    x = 23,005,886.76/5,351.84
  6. Step 6: Final answer
    x = 4,298.69

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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.