Home / 6,430.20-9,638.10-3,658.20

Finding the Fourth Proportional to 6,430.20, 9,638.10 and 3,658.20

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Solution

The fourth proportional to 6,430.20, 9,638.10 and 3,658.20 is: 5,483.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.20 : 9,638.10 = 3,658.20 : x
  2. Step 2: Convert to fraction form
    6,430.20/9,638.10 = 3,658.20/x
  3. Step 3: Cross multiply
    6,430.20x = 9,638.10 × 3,658.20
  4. Step 4: Simplify right side
    6,430.20x = 35,258,097.42
  5. Step 5: Solve for x
    x = 35,258,097.42/6,430.20
  6. Step 6: Final answer
    x = 5,483.20

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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.