Home / 8,422.87-11,623.65-4,646.20

Finding the Fourth Proportional to 8,422.87, 11,623.65 and 4,646.20

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Solution

The fourth proportional to 8,422.87, 11,623.65 and 4,646.20 is: 6,411.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.87 : 11,623.65 = 4,646.20 : x
  2. Step 2: Convert to fraction form
    8,422.87/11,623.65 = 4,646.20/x
  3. Step 3: Cross multiply
    8,422.87x = 11,623.65 × 4,646.20
  4. Step 4: Simplify right side
    8,422.87x = 54,005,802.63
  5. Step 5: Solve for x
    x = 54,005,802.63/8,422.87
  6. Step 6: Final answer
    x = 6,411.81

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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.