Home / 5,621.55-8,430.71-1,672.65

Finding the Fourth Proportional to 5,621.55, 8,430.71 and 1,672.65

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Solution

The fourth proportional to 5,621.55, 8,430.71 and 1,672.65 is: 2,508.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.55 : 8,430.71 = 1,672.65 : x
  2. Step 2: Convert to fraction form
    5,621.55/8,430.71 = 1,672.65/x
  3. Step 3: Cross multiply
    5,621.55x = 8,430.71 × 1,672.65
  4. Step 4: Simplify right side
    5,621.55x = 14,101,627.08
  5. Step 5: Solve for x
    x = 14,101,627.08/5,621.55
  6. Step 6: Final answer
    x = 2,508.49

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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.