Home / 1,655.03-2,282.38-1,261.37

Finding the Fourth Proportional to 1,655.03, 2,282.38 and 1,261.37

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Solution

The fourth proportional to 1,655.03, 2,282.38 and 1,261.37 is: 1,739.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,655.03 : 2,282.38 = 1,261.37 : x
  2. Step 2: Convert to fraction form
    1,655.03/2,282.38 = 1,261.37/x
  3. Step 3: Cross multiply
    1,655.03x = 2,282.38 × 1,261.37
  4. Step 4: Simplify right side
    1,655.03x = 2,878,928.21
  5. Step 5: Solve for x
    x = 2,878,928.21/1,655.03
  6. Step 6: Final answer
    x = 1,739.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.