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Finding the Fourth Proportional to 6,510.36, 8,985.18 and 3,993.96

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Solution

The fourth proportional to 6,510.36, 8,985.18 and 3,993.96 is: 5,512.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,510.36 : 8,985.18 = 3,993.96 : x
  2. Step 2: Convert to fraction form
    6,510.36/8,985.18 = 3,993.96/x
  3. Step 3: Cross multiply
    6,510.36x = 8,985.18 × 3,993.96
  4. Step 4: Simplify right side
    6,510.36x = 35,886,449.51
  5. Step 5: Solve for x
    x = 35,886,449.51/6,510.36
  6. Step 6: Final answer
    x = 5,512.21

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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.