Home / 3,378.90-4,653-2,881.36

Finding the Fourth Proportional to 3,378.90, 4,653 and 2,881.36

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Solution

The fourth proportional to 3,378.90, 4,653 and 2,881.36 is: 3,967.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.90 : 4,653 = 2,881.36 : x
  2. Step 2: Convert to fraction form
    3,378.90/4,653 = 2,881.36/x
  3. Step 3: Cross multiply
    3,378.90x = 4,653 × 2,881.36
  4. Step 4: Simplify right side
    3,378.90x = 13,406,968.08
  5. Step 5: Solve for x
    x = 13,406,968.08/3,378.90
  6. Step 6: Final answer
    x = 3,967.85

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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.