Home / 1,400.52-2,090.58-1,299.18

Finding the Fourth Proportional to 1,400.52, 2,090.58 and 1,299.18

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Solution

The fourth proportional to 1,400.52, 2,090.58 and 1,299.18 is: 1,939.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.52 : 2,090.58 = 1,299.18 : x
  2. Step 2: Convert to fraction form
    1,400.52/2,090.58 = 1,299.18/x
  3. Step 3: Cross multiply
    1,400.52x = 2,090.58 × 1,299.18
  4. Step 4: Simplify right side
    1,400.52x = 2,716,039.72
  5. Step 5: Solve for x
    x = 2,716,039.72/1,400.52
  6. Step 6: Final answer
    x = 1,939.31

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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.