Home / 1,431.48-2,143.47-1,152.36

Finding the Fourth Proportional to 1,431.48, 2,143.47 and 1,152.36

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Solution

The fourth proportional to 1,431.48, 2,143.47 and 1,152.36 is: 1,725.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.48 : 2,143.47 = 1,152.36 : x
  2. Step 2: Convert to fraction form
    1,431.48/2,143.47 = 1,152.36/x
  3. Step 3: Cross multiply
    1,431.48x = 2,143.47 × 1,152.36
  4. Step 4: Simplify right side
    1,431.48x = 2,470,049.09
  5. Step 5: Solve for x
    x = 2,470,049.09/1,431.48
  6. Step 6: Final answer
    x = 1,725.52

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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.