Home / 7,140.61-10,715.78-4,293.56

Finding the Fourth Proportional to 7,140.61, 10,715.78 and 4,293.56

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Solution

The fourth proportional to 7,140.61, 10,715.78 and 4,293.56 is: 6,443.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.61 : 10,715.78 = 4,293.56 : x
  2. Step 2: Convert to fraction form
    7,140.61/10,715.78 = 4,293.56/x
  3. Step 3: Cross multiply
    7,140.61x = 10,715.78 × 4,293.56
  4. Step 4: Simplify right side
    7,140.61x = 46,008,844.38
  5. Step 5: Solve for x
    x = 46,008,844.38/7,140.61
  6. Step 6: Final answer
    x = 6,443.27

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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.