Home / 7,139.46-10,707.47-2,754.12

Finding the Fourth Proportional to 7,139.46, 10,707.47 and 2,754.12

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Solution

The fourth proportional to 7,139.46, 10,707.47 and 2,754.12 is: 4,130.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.46 : 10,707.47 = 2,754.12 : x
  2. Step 2: Convert to fraction form
    7,139.46/10,707.47 = 2,754.12/x
  3. Step 3: Cross multiply
    7,139.46x = 10,707.47 × 2,754.12
  4. Step 4: Simplify right side
    7,139.46x = 29,489,643.51
  5. Step 5: Solve for x
    x = 29,489,643.51/7,139.46
  6. Step 6: Final answer
    x = 4,130.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.