Home / 8,420.96-11,621.04-5,436.92

Finding the Fourth Proportional to 8,420.96, 11,621.04 and 5,436.92

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Solution

The fourth proportional to 8,420.96, 11,621.04 and 5,436.92 is: 7,503.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.96 : 11,621.04 = 5,436.92 : x
  2. Step 2: Convert to fraction form
    8,420.96/11,621.04 = 5,436.92/x
  3. Step 3: Cross multiply
    8,420.96x = 11,621.04 × 5,436.92
  4. Step 4: Simplify right side
    8,420.96x = 63,182,664.80
  5. Step 5: Solve for x
    x = 63,182,664.80/8,420.96
  6. Step 6: Final answer
    x = 7,503.02

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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.