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Finding the Fourth Proportional to 2,135.53, 2,946.53 and 1,296.21

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Solution

The fourth proportional to 2,135.53, 2,946.53 and 1,296.21 is: 1,788.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.53 : 2,946.53 = 1,296.21 : x
  2. Step 2: Convert to fraction form
    2,135.53/2,946.53 = 1,296.21/x
  3. Step 3: Cross multiply
    2,135.53x = 2,946.53 × 1,296.21
  4. Step 4: Simplify right side
    2,135.53x = 3,819,315.17
  5. Step 5: Solve for x
    x = 3,819,315.17/2,135.53
  6. Step 6: Final answer
    x = 1,788.46

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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.