Home / 7,111.23-9,812.55-4,126.63

Finding the Fourth Proportional to 7,111.23, 9,812.55 and 4,126.63

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Solution

The fourth proportional to 7,111.23, 9,812.55 and 4,126.63 is: 5,694.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.23 : 9,812.55 = 4,126.63 : x
  2. Step 2: Convert to fraction form
    7,111.23/9,812.55 = 4,126.63/x
  3. Step 3: Cross multiply
    7,111.23x = 9,812.55 × 4,126.63
  4. Step 4: Simplify right side
    7,111.23x = 40,492,763.21
  5. Step 5: Solve for x
    x = 40,492,763.21/7,111.23
  6. Step 6: Final answer
    x = 5,694.20

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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.