Home / 6,421.32-9,622.67-3,130.70

Finding the Fourth Proportional to 6,421.32, 9,622.67 and 3,130.70

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Solution

The fourth proportional to 6,421.32, 9,622.67 and 3,130.70 is: 4,691.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.32 : 9,622.67 = 3,130.70 : x
  2. Step 2: Convert to fraction form
    6,421.32/9,622.67 = 3,130.70/x
  3. Step 3: Cross multiply
    6,421.32x = 9,622.67 × 3,130.70
  4. Step 4: Simplify right side
    6,421.32x = 30,125,629.20
  5. Step 5: Solve for x
    x = 30,125,629.20/6,421.32
  6. Step 6: Final answer
    x = 4,691.50

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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.