Home / 3,389.73-4,677.68-1,897.40

Finding the Fourth Proportional to 3,389.73, 4,677.68 and 1,897.40

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Solution

The fourth proportional to 3,389.73, 4,677.68 and 1,897.40 is: 2,618.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.73 : 4,677.68 = 1,897.40 : x
  2. Step 2: Convert to fraction form
    3,389.73/4,677.68 = 1,897.40/x
  3. Step 3: Cross multiply
    3,389.73x = 4,677.68 × 1,897.40
  4. Step 4: Simplify right side
    3,389.73x = 8,875,397.16
  5. Step 5: Solve for x
    x = 8,875,397.16/3,389.73
  6. Step 6: Final answer
    x = 2,618.32

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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.