Home / 1,653.40-2,280.18-1,321.84

Finding the Fourth Proportional to 1,653.40, 2,280.18 and 1,321.84

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Solution

The fourth proportional to 1,653.40, 2,280.18 and 1,321.84 is: 1,822.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653.40 : 2,280.18 = 1,321.84 : x
  2. Step 2: Convert to fraction form
    1,653.40/2,280.18 = 1,321.84/x
  3. Step 3: Cross multiply
    1,653.40x = 2,280.18 × 1,321.84
  4. Step 4: Simplify right side
    1,653.40x = 3,014,033.13
  5. Step 5: Solve for x
    x = 3,014,033.13/1,653.40
  6. Step 6: Final answer
    x = 1,822.93

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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.