Home / 1,431.57-2,131.08-1,364.48

Finding the Fourth Proportional to 1,431.57, 2,131.08 and 1,364.48

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Solution

The fourth proportional to 1,431.57, 2,131.08 and 1,364.48 is: 2,031.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.57 : 2,131.08 = 1,364.48 : x
  2. Step 2: Convert to fraction form
    1,431.57/2,131.08 = 1,364.48/x
  3. Step 3: Cross multiply
    1,431.57x = 2,131.08 × 1,364.48
  4. Step 4: Simplify right side
    1,431.57x = 2,907,819.77
  5. Step 5: Solve for x
    x = 2,907,819.77/1,431.57
  6. Step 6: Final answer
    x = 2,031.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.