Home / 7,140.75-10,709.95-1,947.03

Finding the Fourth Proportional to 7,140.75, 10,709.95 and 1,947.03

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Solution

The fourth proportional to 7,140.75, 10,709.95 and 1,947.03 is: 2,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.75 : 10,709.95 = 1,947.03 : x
  2. Step 2: Convert to fraction form
    7,140.75/10,709.95 = 1,947.03/x
  3. Step 3: Cross multiply
    7,140.75x = 10,709.95 × 1,947.03
  4. Step 4: Simplify right side
    7,140.75x = 20,852,593.95
  5. Step 5: Solve for x
    x = 20,852,593.95/7,140.75
  6. Step 6: Final answer
    x = 2,920.22

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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.