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Finding the Fourth Proportional to 5,858.99, 8,085.40 and 3,206.40

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Solution

The fourth proportional to 5,858.99, 8,085.40 and 3,206.40 is: 4,424.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,858.99 : 8,085.40 = 3,206.40 : x
  2. Step 2: Convert to fraction form
    5,858.99/8,085.40 = 3,206.40/x
  3. Step 3: Cross multiply
    5,858.99x = 8,085.40 × 3,206.40
  4. Step 4: Simplify right side
    5,858.99x = 25,925,030.57
  5. Step 5: Solve for x
    x = 25,925,030.57/5,858.99
  6. Step 6: Final answer
    x = 4,424.83

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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.