Home / 7,111.85-9,810.05-4,589.91

Finding the Fourth Proportional to 7,111.85, 9,810.05 and 4,589.91

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Solution

The fourth proportional to 7,111.85, 9,810.05 and 4,589.91 is: 6,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.85 : 9,810.05 = 4,589.91 : x
  2. Step 2: Convert to fraction form
    7,111.85/9,810.05 = 4,589.91/x
  3. Step 3: Cross multiply
    7,111.85x = 9,810.05 × 4,589.91
  4. Step 4: Simplify right side
    7,111.85x = 45,027,223.65
  5. Step 5: Solve for x
    x = 45,027,223.65/7,111.85
  6. Step 6: Final answer
    x = 6,331.30

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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.