Home / 2,505.51-3,451.31-1,915.05

Finding the Fourth Proportional to 2,505.51, 3,451.31 and 1,915.05

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Solution

The fourth proportional to 2,505.51, 3,451.31 and 1,915.05 is: 2,637.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505.51 : 3,451.31 = 1,915.05 : x
  2. Step 2: Convert to fraction form
    2,505.51/3,451.31 = 1,915.05/x
  3. Step 3: Cross multiply
    2,505.51x = 3,451.31 × 1,915.05
  4. Step 4: Simplify right side
    2,505.51x = 6,609,421.64
  5. Step 5: Solve for x
    x = 6,609,421.64/2,505.51
  6. Step 6: Final answer
    x = 2,637.95

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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.