Home / 7,143.20-10,710.70-4,223.55

Finding the Fourth Proportional to 7,143.20, 10,710.70 and 4,223.55

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Solution

The fourth proportional to 7,143.20, 10,710.70 and 4,223.55 is: 6,332.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.20 : 10,710.70 = 4,223.55 : x
  2. Step 2: Convert to fraction form
    7,143.20/10,710.70 = 4,223.55/x
  3. Step 3: Cross multiply
    7,143.20x = 10,710.70 × 4,223.55
  4. Step 4: Simplify right side
    7,143.20x = 45,237,206.59
  5. Step 5: Solve for x
    x = 45,237,206.59/7,143.20
  6. Step 6: Final answer
    x = 6,332.91

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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.