Home / 1,431.09-2,144.74-651.19

Finding the Fourth Proportional to 1,431.09, 2,144.74 and 651.19

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Solution

The fourth proportional to 1,431.09, 2,144.74 and 651.19 is: 975.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.09 : 2,144.74 = 651.19 : x
  2. Step 2: Convert to fraction form
    1,431.09/2,144.74 = 651.19/x
  3. Step 3: Cross multiply
    1,431.09x = 2,144.74 × 651.19
  4. Step 4: Simplify right side
    1,431.09x = 1,396,631.61
  5. Step 5: Solve for x
    x = 1,396,631.61/1,431.09
  6. Step 6: Final answer
    x = 975.92

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1.5x scale

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.