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Finding the Fourth Proportional to 5,621.70, 7,765.82 and 4,058.00

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Solution

The fourth proportional to 5,621.70, 7,765.82 and 4,058.00 is: 5,605.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.70 : 7,765.82 = 4,058.00 : x
  2. Step 2: Convert to fraction form
    5,621.70/7,765.82 = 4,058.00/x
  3. Step 3: Cross multiply
    5,621.70x = 7,765.82 × 4,058.00
  4. Step 4: Simplify right side
    5,621.70x = 31,513,705.61
  5. Step 5: Solve for x
    x = 31,513,705.61/5,621.70
  6. Step 6: Final answer
    x = 5,605.72

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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.