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Finding the Fourth Proportional to 3,547.84, 4,900.80 and 3,216.64

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Solution

The fourth proportional to 3,547.84, 4,900.80 and 3,216.64 is: 4,443.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,547.84 : 4,900.80 = 3,216.64 : x
  2. Step 2: Convert to fraction form
    3,547.84/4,900.80 = 3,216.64/x
  3. Step 3: Cross multiply
    3,547.84x = 4,900.80 × 3,216.64
  4. Step 4: Simplify right side
    3,547.84x = 15,764,109.31
  5. Step 5: Solve for x
    x = 15,764,109.31/3,547.84
  6. Step 6: Final answer
    x = 4,443.30

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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.