Home / 7,111.18-9,806.11-4,720.29

Finding the Fourth Proportional to 7,111.18, 9,806.11 and 4,720.29

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Solution

The fourth proportional to 7,111.18, 9,806.11 and 4,720.29 is: 6,509.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.18 : 9,806.11 = 4,720.29 : x
  2. Step 2: Convert to fraction form
    7,111.18/9,806.11 = 4,720.29/x
  3. Step 3: Cross multiply
    7,111.18x = 9,806.11 × 4,720.29
  4. Step 4: Simplify right side
    7,111.18x = 46,287,682.97
  5. Step 5: Solve for x
    x = 46,287,682.97/7,111.18
  6. Step 6: Final answer
    x = 6,509.14

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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.