Home / 5,409.60-8,114.40-2,638.05

Finding the Fourth Proportional to 5,409.60, 8,114.40 and 2,638.05

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Solution

The fourth proportional to 5,409.60, 8,114.40 and 2,638.05 is: 3,957.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.60 : 8,114.40 = 2,638.05 : x
  2. Step 2: Convert to fraction form
    5,409.60/8,114.40 = 2,638.05/x
  3. Step 3: Cross multiply
    5,409.60x = 8,114.40 × 2,638.05
  4. Step 4: Simplify right side
    5,409.60x = 21,406,192.92
  5. Step 5: Solve for x
    x = 21,406,192.92/5,409.60
  6. Step 6: Final answer
    x = 3,957.08

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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.