Home / 7,117.10-9,820.26-4,131.86

Finding the Fourth Proportional to 7,117.10, 9,820.26 and 4,131.86

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Solution

The fourth proportional to 7,117.10, 9,820.26 and 4,131.86 is: 5,701.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.10 : 9,820.26 = 4,131.86 : x
  2. Step 2: Convert to fraction form
    7,117.10/9,820.26 = 4,131.86/x
  3. Step 3: Cross multiply
    7,117.10x = 9,820.26 × 4,131.86
  4. Step 4: Simplify right side
    7,117.10x = 40,575,939.48
  5. Step 5: Solve for x
    x = 40,575,939.48/7,117.10
  6. Step 6: Final answer
    x = 5,701.19

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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.