Home / 4,453.12-6,681.20-1,989.64

Finding the Fourth Proportional to 4,453.12, 6,681.20 and 1,989.64

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Solution

The fourth proportional to 4,453.12, 6,681.20 and 1,989.64 is: 2,985.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,453.12 : 6,681.20 = 1,989.64 : x
  2. Step 2: Convert to fraction form
    4,453.12/6,681.20 = 1,989.64/x
  3. Step 3: Cross multiply
    4,453.12x = 6,681.20 × 1,989.64
  4. Step 4: Simplify right side
    4,453.12x = 13,293,182.77
  5. Step 5: Solve for x
    x = 13,293,182.77/4,453.12
  6. Step 6: Final answer
    x = 2,985.14

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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.