Home / 5,126.20-7,681.20-4,429.60

Finding the Fourth Proportional to 5,126.20, 7,681.20 and 4,429.60

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Solution

The fourth proportional to 5,126.20, 7,681.20 and 4,429.60 is: 6,637.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.20 : 7,681.20 = 4,429.60 : x
  2. Step 2: Convert to fraction form
    5,126.20/7,681.20 = 4,429.60/x
  3. Step 3: Cross multiply
    5,126.20x = 7,681.20 × 4,429.60
  4. Step 4: Simplify right side
    5,126.20x = 34,024,643.52
  5. Step 5: Solve for x
    x = 34,024,643.52/5,126.20
  6. Step 6: Final answer
    x = 6,637.40

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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.