Home / 3,509.09-4,842.55-1,915.75

Finding the Fourth Proportional to 3,509.09, 4,842.55 and 1,915.75

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Solution

The fourth proportional to 3,509.09, 4,842.55 and 1,915.75 is: 2,643.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,509.09 : 4,842.55 = 1,915.75 : x
  2. Step 2: Convert to fraction form
    3,509.09/4,842.55 = 1,915.75/x
  3. Step 3: Cross multiply
    3,509.09x = 4,842.55 × 1,915.75
  4. Step 4: Simplify right side
    3,509.09x = 9,277,123.61
  5. Step 5: Solve for x
    x = 9,277,123.61/3,509.09
  6. Step 6: Final answer
    x = 2,643.74

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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.