Home / 1,682.40-2,314.80-1,643.52

Finding the Fourth Proportional to 1,682.40, 2,314.80 and 1,643.52

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Solution

The fourth proportional to 1,682.40, 2,314.80 and 1,643.52 is: 2,261.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.40 : 2,314.80 = 1,643.52 : x
  2. Step 2: Convert to fraction form
    1,682.40/2,314.80 = 1,643.52/x
  3. Step 3: Cross multiply
    1,682.40x = 2,314.80 × 1,643.52
  4. Step 4: Simplify right side
    1,682.40x = 3,804,420.10
  5. Step 5: Solve for x
    x = 3,804,420.10/1,682.40
  6. Step 6: Final answer
    x = 2,261.31

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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.