Home / 7,780.53-10,737.18-4,243.80

Finding the Fourth Proportional to 7,780.53, 10,737.18 and 4,243.80

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Solution

The fourth proportional to 7,780.53, 10,737.18 and 4,243.80 is: 5,856.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.53 : 10,737.18 = 4,243.80 : x
  2. Step 2: Convert to fraction form
    7,780.53/10,737.18 = 4,243.80/x
  3. Step 3: Cross multiply
    7,780.53x = 10,737.18 × 4,243.80
  4. Step 4: Simplify right side
    7,780.53x = 45,566,444.48
  5. Step 5: Solve for x
    x = 45,566,444.48/7,780.53
  6. Step 6: Final answer
    x = 5,856.47

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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.