Home / 4,915.30-6,782.95-2,871.58

Finding the Fourth Proportional to 4,915.30, 6,782.95 and 2,871.58

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Solution

The fourth proportional to 4,915.30, 6,782.95 and 2,871.58 is: 3,962.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.30 : 6,782.95 = 2,871.58 : x
  2. Step 2: Convert to fraction form
    4,915.30/6,782.95 = 2,871.58/x
  3. Step 3: Cross multiply
    4,915.30x = 6,782.95 × 2,871.58
  4. Step 4: Simplify right side
    4,915.30x = 19,477,735.29
  5. Step 5: Solve for x
    x = 19,477,735.29/4,915.30
  6. Step 6: Final answer
    x = 3,962.68

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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.