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Finding the Fourth Proportional to 7,218.78, 10,814.25 and 4,746.18

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Solution

The fourth proportional to 7,218.78, 10,814.25 and 4,746.18 is: 7,110.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.78 : 10,814.25 = 4,746.18 : x
  2. Step 2: Convert to fraction form
    7,218.78/10,814.25 = 4,746.18/x
  3. Step 3: Cross multiply
    7,218.78x = 10,814.25 × 4,746.18
  4. Step 4: Simplify right side
    7,218.78x = 51,326,377.07
  5. Step 5: Solve for x
    x = 51,326,377.07/7,218.78
  6. Step 6: Final answer
    x = 7,110.12

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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.