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Finding the Fourth Proportional to 2,926.17, 4,389.21 and 874.17

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Solution

The fourth proportional to 2,926.17, 4,389.21 and 874.17 is: 1,311.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,926.17 : 4,389.21 = 874.17 : x
  2. Step 2: Convert to fraction form
    2,926.17/4,389.21 = 874.17/x
  3. Step 3: Cross multiply
    2,926.17x = 4,389.21 × 874.17
  4. Step 4: Simplify right side
    2,926.17x = 3,836,915.71
  5. Step 5: Solve for x
    x = 3,836,915.71/2,926.17
  6. Step 6: Final answer
    x = 1,311.24

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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.