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Finding the Fourth Proportional to 2,038.95, 3,058.56 and 722.70

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Solution

The fourth proportional to 2,038.95, 3,058.56 and 722.70 is: 1,084.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,038.95 : 3,058.56 = 722.70 : x
  2. Step 2: Convert to fraction form
    2,038.95/3,058.56 = 722.70/x
  3. Step 3: Cross multiply
    2,038.95x = 3,058.56 × 722.70
  4. Step 4: Simplify right side
    2,038.95x = 2,210,421.31
  5. Step 5: Solve for x
    x = 2,210,421.31/2,038.95
  6. Step 6: Final answer
    x = 1,084.10

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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.