Home / 5,122.61-7,685.28-1,836.63

Finding the Fourth Proportional to 5,122.61, 7,685.28 and 1,836.63

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Solution

The fourth proportional to 5,122.61, 7,685.28 and 1,836.63 is: 2,755.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.61 : 7,685.28 = 1,836.63 : x
  2. Step 2: Convert to fraction form
    5,122.61/7,685.28 = 1,836.63/x
  3. Step 3: Cross multiply
    5,122.61x = 7,685.28 × 1,836.63
  4. Step 4: Simplify right side
    5,122.61x = 14,115,015.81
  5. Step 5: Solve for x
    x = 14,115,015.81/5,122.61
  6. Step 6: Final answer
    x = 2,755.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.