Home / 8,301.24-11,421.72-7,178.58

Finding the Fourth Proportional to 8,301.24, 11,421.72 and 7,178.58

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Solution

The fourth proportional to 8,301.24, 11,421.72 and 7,178.58 is: 9,877.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,301.24 : 11,421.72 = 7,178.58 : x
  2. Step 2: Convert to fraction form
    8,301.24/11,421.72 = 7,178.58/x
  3. Step 3: Cross multiply
    8,301.24x = 11,421.72 × 7,178.58
  4. Step 4: Simplify right side
    8,301.24x = 81,991,730.76
  5. Step 5: Solve for x
    x = 81,991,730.76/8,301.24
  6. Step 6: Final answer
    x = 9,877.05

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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.