Home / 3,389.91-4,677.75-2,113.68

Finding the Fourth Proportional to 3,389.91, 4,677.75 and 2,113.68

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Solution

The fourth proportional to 3,389.91, 4,677.75 and 2,113.68 is: 2,916.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.91 : 4,677.75 = 2,113.68 : x
  2. Step 2: Convert to fraction form
    3,389.91/4,677.75 = 2,113.68/x
  3. Step 3: Cross multiply
    3,389.91x = 4,677.75 × 2,113.68
  4. Step 4: Simplify right side
    3,389.91x = 9,887,266.62
  5. Step 5: Solve for x
    x = 9,887,266.62/3,389.91
  6. Step 6: Final answer
    x = 2,916.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.