Home / 4,453.61-6,681.95-1,990.13

Finding the Fourth Proportional to 4,453.61, 6,681.95 and 1,990.13

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Solution

The fourth proportional to 4,453.61, 6,681.95 and 1,990.13 is: 2,985.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,453.61 : 6,681.95 = 1,990.13 : x
  2. Step 2: Convert to fraction form
    4,453.61/6,681.95 = 1,990.13/x
  3. Step 3: Cross multiply
    4,453.61x = 6,681.95 × 1,990.13
  4. Step 4: Simplify right side
    4,453.61x = 13,297,949.15
  5. Step 5: Solve for x
    x = 13,297,949.15/4,453.61
  6. Step 6: Final answer
    x = 2,985.88

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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.