Home / 2,506.86-3,459.60-1,387.92

Finding the Fourth Proportional to 2,506.86, 3,459.60 and 1,387.92

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Solution

The fourth proportional to 2,506.86, 3,459.60 and 1,387.92 is: 1,915.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,506.86 : 3,459.60 = 1,387.92 : x
  2. Step 2: Convert to fraction form
    2,506.86/3,459.60 = 1,387.92/x
  3. Step 3: Cross multiply
    2,506.86x = 3,459.60 × 1,387.92
  4. Step 4: Simplify right side
    2,506.86x = 4,801,661.01
  5. Step 5: Solve for x
    x = 4,801,661.01/2,506.86
  6. Step 6: Final answer
    x = 1,915.41

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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.