Home / 2,653.15-3,656.59-2,157.43

Finding the Fourth Proportional to 2,653.15, 3,656.59 and 2,157.43

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Solution

The fourth proportional to 2,653.15, 3,656.59 and 2,157.43 is: 2,973.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.15 : 3,656.59 = 2,157.43 : x
  2. Step 2: Convert to fraction form
    2,653.15/3,656.59 = 2,157.43/x
  3. Step 3: Cross multiply
    2,653.15x = 3,656.59 × 2,157.43
  4. Step 4: Simplify right side
    2,653.15x = 7,888,836.96
  5. Step 5: Solve for x
    x = 7,888,836.96/2,653.15
  6. Step 6: Final answer
    x = 2,973.39

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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.