Home / 2,071.99-3,102.85-1,289.53

Finding the Fourth Proportional to 2,071.99, 3,102.85 and 1,289.53

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Solution

The fourth proportional to 2,071.99, 3,102.85 and 1,289.53 is: 1,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.99 : 3,102.85 = 1,289.53 : x
  2. Step 2: Convert to fraction form
    2,071.99/3,102.85 = 1,289.53/x
  3. Step 3: Cross multiply
    2,071.99x = 3,102.85 × 1,289.53
  4. Step 4: Simplify right side
    2,071.99x = 4,001,218.16
  5. Step 5: Solve for x
    x = 4,001,218.16/2,071.99
  6. Step 6: Final answer
    x = 1,931.10

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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.