Home / 3,311.64-4,569.53-1,985.09

Finding the Fourth Proportional to 3,311.64, 4,569.53 and 1,985.09

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Solution

The fourth proportional to 3,311.64, 4,569.53 and 1,985.09 is: 2,739.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.64 : 4,569.53 = 1,985.09 : x
  2. Step 2: Convert to fraction form
    3,311.64/4,569.53 = 1,985.09/x
  3. Step 3: Cross multiply
    3,311.64x = 4,569.53 × 1,985.09
  4. Step 4: Simplify right side
    3,311.64x = 9,070,895.53
  5. Step 5: Solve for x
    x = 9,070,895.53/3,311.64
  6. Step 6: Final answer
    x = 2,739.09

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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.