Home / 2,909.88-4,015.66-1,583.60

Finding the Fourth Proportional to 2,909.88, 4,015.66 and 1,583.60

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Solution

The fourth proportional to 2,909.88, 4,015.66 and 1,583.60 is: 2,185.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.88 : 4,015.66 = 1,583.60 : x
  2. Step 2: Convert to fraction form
    2,909.88/4,015.66 = 1,583.60/x
  3. Step 3: Cross multiply
    2,909.88x = 4,015.66 × 1,583.60
  4. Step 4: Simplify right side
    2,909.88x = 6,359,199.18
  5. Step 5: Solve for x
    x = 6,359,199.18/2,909.88
  6. Step 6: Final answer
    x = 2,185.38

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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.