Home / 4,915.61-7,372.29-1,405.55

Finding the Fourth Proportional to 4,915.61, 7,372.29 and 1,405.55

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Solution

The fourth proportional to 4,915.61, 7,372.29 and 1,405.55 is: 2,108.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.61 : 7,372.29 = 1,405.55 : x
  2. Step 2: Convert to fraction form
    4,915.61/7,372.29 = 1,405.55/x
  3. Step 3: Cross multiply
    4,915.61x = 7,372.29 × 1,405.55
  4. Step 4: Simplify right side
    4,915.61x = 10,362,122.21
  5. Step 5: Solve for x
    x = 10,362,122.21/4,915.61
  6. Step 6: Final answer
    x = 2,108.00

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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.