Home / 7,507.30-11,255.55-4,221.40

Finding the Fourth Proportional to 7,507.30, 11,255.55 and 4,221.40

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Solution

The fourth proportional to 7,507.30, 11,255.55 and 4,221.40 is: 6,329.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,507.30 : 11,255.55 = 4,221.40 : x
  2. Step 2: Convert to fraction form
    7,507.30/11,255.55 = 4,221.40/x
  3. Step 3: Cross multiply
    7,507.30x = 11,255.55 × 4,221.40
  4. Step 4: Simplify right side
    7,507.30x = 47,514,178.77
  5. Step 5: Solve for x
    x = 47,514,178.77/7,507.30
  6. Step 6: Final answer
    x = 6,329.06

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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.