Home / 6,623.16-9,139.98-3,970.68

Finding the Fourth Proportional to 6,623.16, 9,139.98 and 3,970.68

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Solution

The fourth proportional to 6,623.16, 9,139.98 and 3,970.68 is: 5,479.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,623.16 : 9,139.98 = 3,970.68 : x
  2. Step 2: Convert to fraction form
    6,623.16/9,139.98 = 3,970.68/x
  3. Step 3: Cross multiply
    6,623.16x = 9,139.98 × 3,970.68
  4. Step 4: Simplify right side
    6,623.16x = 36,291,935.79
  5. Step 5: Solve for x
    x = 36,291,935.79/6,623.16
  6. Step 6: Final answer
    x = 5,479.55

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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.