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Finding the Fourth Proportional to 6,378.58, 8,802.93 and 3,860.79

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Solution

The fourth proportional to 6,378.58, 8,802.93 and 3,860.79 is: 5,328.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.58 : 8,802.93 = 3,860.79 : x
  2. Step 2: Convert to fraction form
    6,378.58/8,802.93 = 3,860.79/x
  3. Step 3: Cross multiply
    6,378.58x = 8,802.93 × 3,860.79
  4. Step 4: Simplify right side
    6,378.58x = 33,986,264.11
  5. Step 5: Solve for x
    x = 33,986,264.11/6,378.58
  6. Step 6: Final answer
    x = 5,328.19

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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.