Home / 7,020.95-9,685.49-5,129.37

Finding the Fourth Proportional to 7,020.95, 9,685.49 and 5,129.37

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Solution

The fourth proportional to 7,020.95, 9,685.49 and 5,129.37 is: 7,076.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.95 : 9,685.49 = 5,129.37 : x
  2. Step 2: Convert to fraction form
    7,020.95/9,685.49 = 5,129.37/x
  3. Step 3: Cross multiply
    7,020.95x = 9,685.49 × 5,129.37
  4. Step 4: Simplify right side
    7,020.95x = 49,680,436.19
  5. Step 5: Solve for x
    x = 49,680,436.19/7,020.95
  6. Step 6: Final answer
    x = 7,076.03

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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.