Home / 5,628.50-8,442.74-1,931.80

Finding the Fourth Proportional to 5,628.50, 8,442.74 and 1,931.80

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Solution

The fourth proportional to 5,628.50, 8,442.74 and 1,931.80 is: 2,897.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.50 : 8,442.74 = 1,931.80 : x
  2. Step 2: Convert to fraction form
    5,628.50/8,442.74 = 1,931.80/x
  3. Step 3: Cross multiply
    5,628.50x = 8,442.74 × 1,931.80
  4. Step 4: Simplify right side
    5,628.50x = 16,309,685.13
  5. Step 5: Solve for x
    x = 16,309,685.13/5,628.50
  6. Step 6: Final answer
    x = 2,897.70

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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.