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Finding the Fourth Proportional to 6,886.77, 10,328.31 and 2,990.25

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Solution

The fourth proportional to 6,886.77, 10,328.31 and 2,990.25 is: 4,484.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,886.77 : 10,328.31 = 2,990.25 : x
  2. Step 2: Convert to fraction form
    6,886.77/10,328.31 = 2,990.25/x
  3. Step 3: Cross multiply
    6,886.77x = 10,328.31 × 2,990.25
  4. Step 4: Simplify right side
    6,886.77x = 30,884,228.98
  5. Step 5: Solve for x
    x = 30,884,228.98/6,886.77
  6. Step 6: Final answer
    x = 4,484.57

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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.