Home / 10,407.80-15,611.48-2,911.16

Finding the Fourth Proportional to 10,407.80, 15,611.48 and 2,911.16

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Solution

The fourth proportional to 10,407.80, 15,611.48 and 2,911.16 is: 4,366.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,407.80 : 15,611.48 = 2,911.16 : x
  2. Step 2: Convert to fraction form
    10,407.80/15,611.48 = 2,911.16/x
  3. Step 3: Cross multiply
    10,407.80x = 15,611.48 × 2,911.16
  4. Step 4: Simplify right side
    10,407.80x = 45,447,516.12
  5. Step 5: Solve for x
    x = 45,447,516.12/10,407.80
  6. Step 6: Final answer
    x = 4,366.68

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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.