Home / 5,613.80-8,420.47-1,664.90

Finding the Fourth Proportional to 5,613.80, 8,420.47 and 1,664.90

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Solution

The fourth proportional to 5,613.80, 8,420.47 and 1,664.90 is: 2,497.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,613.80 : 8,420.47 = 1,664.90 : x
  2. Step 2: Convert to fraction form
    5,613.80/8,420.47 = 1,664.90/x
  3. Step 3: Cross multiply
    5,613.80x = 8,420.47 × 1,664.90
  4. Step 4: Simplify right side
    5,613.80x = 14,019,194.24
  5. Step 5: Solve for x
    x = 14,019,194.24/5,613.80
  6. Step 6: Final answer
    x = 2,497.28

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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.