Home / 1,370.19-2,064.44-1,240.36

Finding the Fourth Proportional to 1,370.19, 2,064.44 and 1,240.36

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Solution

The fourth proportional to 1,370.19, 2,064.44 and 1,240.36 is: 1,868.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.19 : 2,064.44 = 1,240.36 : x
  2. Step 2: Convert to fraction form
    1,370.19/2,064.44 = 1,240.36/x
  3. Step 3: Cross multiply
    1,370.19x = 2,064.44 × 1,240.36
  4. Step 4: Simplify right side
    1,370.19x = 2,560,637.44
  5. Step 5: Solve for x
    x = 2,560,637.44/1,370.19
  6. Step 6: Final answer
    x = 1,868.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.