Home / 6,623.18-9,139.20-3,970.16

Finding the Fourth Proportional to 6,623.18, 9,139.20 and 3,970.16

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Solution

The fourth proportional to 6,623.18, 9,139.20 and 3,970.16 is: 5,478.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,623.18 : 9,139.20 = 3,970.16 : x
  2. Step 2: Convert to fraction form
    6,623.18/9,139.20 = 3,970.16/x
  3. Step 3: Cross multiply
    6,623.18x = 9,139.20 × 3,970.16
  4. Step 4: Simplify right side
    6,623.18x = 36,284,086.27
  5. Step 5: Solve for x
    x = 36,284,086.27/6,623.18
  6. Step 6: Final answer
    x = 5,478.35

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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.