Home / 1,370.24-2,055.56-432.87

Finding the Fourth Proportional to 1,370.24, 2,055.56 and 432.87

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Solution

The fourth proportional to 1,370.24, 2,055.56 and 432.87 is: 649.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.24 : 2,055.56 = 432.87 : x
  2. Step 2: Convert to fraction form
    1,370.24/2,055.56 = 432.87/x
  3. Step 3: Cross multiply
    1,370.24x = 2,055.56 × 432.87
  4. Step 4: Simplify right side
    1,370.24x = 889,786.67
  5. Step 5: Solve for x
    x = 889,786.67/1,370.24
  6. Step 6: Final answer
    x = 649.37

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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.