Home / 7,509.20-11,271.90-4,228.70

Finding the Fourth Proportional to 7,509.20, 11,271.90 and 4,228.70

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Solution

The fourth proportional to 7,509.20, 11,271.90 and 4,228.70 is: 6,347.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,509.20 : 11,271.90 = 4,228.70 : x
  2. Step 2: Convert to fraction form
    7,509.20/11,271.90 = 4,228.70/x
  3. Step 3: Cross multiply
    7,509.20x = 11,271.90 × 4,228.70
  4. Step 4: Simplify right side
    7,509.20x = 47,665,483.53
  5. Step 5: Solve for x
    x = 47,665,483.53/7,509.20
  6. Step 6: Final answer
    x = 6,347.61

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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.