Home / 2,681.90-4,021.34-926.08

Finding the Fourth Proportional to 2,681.90, 4,021.34 and 926.08

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Solution

The fourth proportional to 2,681.90, 4,021.34 and 926.08 is: 1,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.90 : 4,021.34 = 926.08 : x
  2. Step 2: Convert to fraction form
    2,681.90/4,021.34 = 926.08/x
  3. Step 3: Cross multiply
    2,681.90x = 4,021.34 × 926.08
  4. Step 4: Simplify right side
    2,681.90x = 3,724,082.55
  5. Step 5: Solve for x
    x = 3,724,082.55/2,681.90
  6. Step 6: Final answer
    x = 1,388.60

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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.