Home / 3,118.95-4,672.76-1,816.47

Finding the Fourth Proportional to 3,118.95, 4,672.76 and 1,816.47

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Solution

The fourth proportional to 3,118.95, 4,672.76 and 1,816.47 is: 2,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.95 : 4,672.76 = 1,816.47 : x
  2. Step 2: Convert to fraction form
    3,118.95/4,672.76 = 1,816.47/x
  3. Step 3: Cross multiply
    3,118.95x = 4,672.76 × 1,816.47
  4. Step 4: Simplify right side
    3,118.95x = 8,487,919.27
  5. Step 5: Solve for x
    x = 8,487,919.27/3,118.95
  6. Step 6: Final answer
    x = 2,721.40

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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.