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Finding the Fourth Proportional to 2,653.40, 3,709.90 and 2,653.40

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Solution

The fourth proportional to 2,653.40, 3,709.90 and 2,653.40 is: 3,709.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.40 : 3,709.90 = 2,653.40 : x
  2. Step 2: Convert to fraction form
    2,653.40/3,709.90 = 2,653.40/x
  3. Step 3: Cross multiply
    2,653.40x = 3,709.90 × 2,653.40
  4. Step 4: Simplify right side
    2,653.40x = 9,843,848.66
  5. Step 5: Solve for x
    x = 9,843,848.66/2,653.40
  6. Step 6: Final answer
    x = 3,709.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.