Home / 8,120.42-11,200.80-5,602.64

Finding the Fourth Proportional to 8,120.42, 11,200.80 and 5,602.64

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Solution

The fourth proportional to 8,120.42, 11,200.80 and 5,602.64 is: 7,727.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.42 : 11,200.80 = 5,602.64 : x
  2. Step 2: Convert to fraction form
    8,120.42/11,200.80 = 5,602.64/x
  3. Step 3: Cross multiply
    8,120.42x = 11,200.80 × 5,602.64
  4. Step 4: Simplify right side
    8,120.42x = 62,754,050.11
  5. Step 5: Solve for x
    x = 62,754,050.11/8,120.42
  6. Step 6: Final answer
    x = 7,727.93

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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.