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Finding the Fourth Proportional to 3,621.71, 4,995.64 and 2,486.84

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Solution

The fourth proportional to 3,621.71, 4,995.64 and 2,486.84 is: 3,430.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.71 : 4,995.64 = 2,486.84 : x
  2. Step 2: Convert to fraction form
    3,621.71/4,995.64 = 2,486.84/x
  3. Step 3: Cross multiply
    3,621.71x = 4,995.64 × 2,486.84
  4. Step 4: Simplify right side
    3,621.71x = 12,423,335.51
  5. Step 5: Solve for x
    x = 12,423,335.51/3,621.71
  6. Step 6: Final answer
    x = 3,430.24

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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.