Home / 4,909.68-7,364.96-1,988.21

Finding the Fourth Proportional to 4,909.68, 7,364.96 and 1,988.21

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Solution

The fourth proportional to 4,909.68, 7,364.96 and 1,988.21 is: 2,982.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,909.68 : 7,364.96 = 1,988.21 : x
  2. Step 2: Convert to fraction form
    4,909.68/7,364.96 = 1,988.21/x
  3. Step 3: Cross multiply
    4,909.68x = 7,364.96 × 1,988.21
  4. Step 4: Simplify right side
    4,909.68x = 14,643,073.68
  5. Step 5: Solve for x
    x = 14,643,073.68/4,909.68
  6. Step 6: Final answer
    x = 2,982.49

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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.