Home / 8,130.56-11,219.10-5,141.12

Finding the Fourth Proportional to 8,130.56, 11,219.10 and 5,141.12

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Solution

The fourth proportional to 8,130.56, 11,219.10 and 5,141.12 is: 7,094.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.56 : 11,219.10 = 5,141.12 : x
  2. Step 2: Convert to fraction form
    8,130.56/11,219.10 = 5,141.12/x
  3. Step 3: Cross multiply
    8,130.56x = 11,219.10 × 5,141.12
  4. Step 4: Simplify right side
    8,130.56x = 57,678,739.39
  5. Step 5: Solve for x
    x = 57,678,739.39/8,130.56
  6. Step 6: Final answer
    x = 7,094.07

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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.