Home / 7,478.57-11,218.40-1,931.96

Finding the Fourth Proportional to 7,478.57, 11,218.40 and 1,931.96

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Solution

The fourth proportional to 7,478.57, 11,218.40 and 1,931.96 is: 2,898.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.57 : 11,218.40 = 1,931.96 : x
  2. Step 2: Convert to fraction form
    7,478.57/11,218.40 = 1,931.96/x
  3. Step 3: Cross multiply
    7,478.57x = 11,218.40 × 1,931.96
  4. Step 4: Simplify right side
    7,478.57x = 21,673,525.70
  5. Step 5: Solve for x
    x = 21,673,525.70/7,478.57
  6. Step 6: Final answer
    x = 2,898.08

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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.