Home / 4,915.12-7,371.31-1,628.47

Finding the Fourth Proportional to 4,915.12, 7,371.31 and 1,628.47

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Solution

The fourth proportional to 4,915.12, 7,371.31 and 1,628.47 is: 2,442.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.12 : 7,371.31 = 1,628.47 : x
  2. Step 2: Convert to fraction form
    4,915.12/7,371.31 = 1,628.47/x
  3. Step 3: Cross multiply
    4,915.12x = 7,371.31 × 1,628.47
  4. Step 4: Simplify right side
    4,915.12x = 12,003,957.20
  5. Step 5: Solve for x
    x = 12,003,957.20/4,915.12
  6. Step 6: Final answer
    x = 2,442.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.