Home / 7,089.18-10,630.20-4,128.58

Finding the Fourth Proportional to 7,089.18, 10,630.20 and 4,128.58

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Solution

The fourth proportional to 7,089.18, 10,630.20 and 4,128.58 is: 6,190.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,089.18 : 10,630.20 = 4,128.58 : x
  2. Step 2: Convert to fraction form
    7,089.18/10,630.20 = 4,128.58/x
  3. Step 3: Cross multiply
    7,089.18x = 10,630.20 × 4,128.58
  4. Step 4: Simplify right side
    7,089.18x = 43,887,631.12
  5. Step 5: Solve for x
    x = 43,887,631.12/7,089.18
  6. Step 6: Final answer
    x = 6,190.79

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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.