Home / 8,074.63-11,139.20-5,718.07

Finding the Fourth Proportional to 8,074.63, 11,139.20 and 5,718.07

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Solution

The fourth proportional to 8,074.63, 11,139.20 and 5,718.07 is: 7,888.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,074.63 : 11,139.20 = 5,718.07 : x
  2. Step 2: Convert to fraction form
    8,074.63/11,139.20 = 5,718.07/x
  3. Step 3: Cross multiply
    8,074.63x = 11,139.20 × 5,718.07
  4. Step 4: Simplify right side
    8,074.63x = 63,694,669.65
  5. Step 5: Solve for x
    x = 63,694,669.65/8,074.63
  6. Step 6: Final answer
    x = 7,888.25

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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.