Home / 8,251.45-11,384.02-5,420.35

Finding the Fourth Proportional to 8,251.45, 11,384.02 and 5,420.35

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Solution

The fourth proportional to 8,251.45, 11,384.02 and 5,420.35 is: 7,478.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,251.45 : 11,384.02 = 5,420.35 : x
  2. Step 2: Convert to fraction form
    8,251.45/11,384.02 = 5,420.35/x
  3. Step 3: Cross multiply
    8,251.45x = 11,384.02 × 5,420.35
  4. Step 4: Simplify right side
    8,251.45x = 61,705,366.03
  5. Step 5: Solve for x
    x = 61,705,366.03/8,251.45
  6. Step 6: Final answer
    x = 7,478.12

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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.