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Finding the Fourth Proportional to 3,980.59, 5,970.87 and 1,058.89

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Solution

The fourth proportional to 3,980.59, 5,970.87 and 1,058.89 is: 1,588.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.59 : 5,970.87 = 1,058.89 : x
  2. Step 2: Convert to fraction form
    3,980.59/5,970.87 = 1,058.89/x
  3. Step 3: Cross multiply
    3,980.59x = 5,970.87 × 1,058.89
  4. Step 4: Simplify right side
    3,980.59x = 6,322,494.53
  5. Step 5: Solve for x
    x = 6,322,494.53/3,980.59
  6. Step 6: Final answer
    x = 1,588.33

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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.