Home / 3,915.71-5,403.93-2,587.09

Finding the Fourth Proportional to 3,915.71, 5,403.93 and 2,587.09

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Solution

The fourth proportional to 3,915.71, 5,403.93 and 2,587.09 is: 3,570.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.71 : 5,403.93 = 2,587.09 : x
  2. Step 2: Convert to fraction form
    3,915.71/5,403.93 = 2,587.09/x
  3. Step 3: Cross multiply
    3,915.71x = 5,403.93 × 2,587.09
  4. Step 4: Simplify right side
    3,915.71x = 13,980,453.26
  5. Step 5: Solve for x
    x = 13,980,453.26/3,915.71
  6. Step 6: Final answer
    x = 3,570.35

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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.