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Finding the Fourth Proportional to 7,256.86, 10,019.82 and 6,418.48

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Solution

The fourth proportional to 7,256.86, 10,019.82 and 6,418.48 is: 8,862.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,256.86 : 10,019.82 = 6,418.48 : x
  2. Step 2: Convert to fraction form
    7,256.86/10,019.82 = 6,418.48/x
  3. Step 3: Cross multiply
    7,256.86x = 10,019.82 × 6,418.48
  4. Step 4: Simplify right side
    7,256.86x = 64,312,014.27
  5. Step 5: Solve for x
    x = 64,312,014.27/7,256.86
  6. Step 6: Final answer
    x = 8,862.24

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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.