Home / 4,915.88-7,372.67-1,405.80

Finding the Fourth Proportional to 4,915.88, 7,372.67 and 1,405.80

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Solution

The fourth proportional to 4,915.88, 7,372.67 and 1,405.80 is: 2,108.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.88 : 7,372.67 = 1,405.80 : x
  2. Step 2: Convert to fraction form
    4,915.88/7,372.67 = 1,405.80/x
  3. Step 3: Cross multiply
    4,915.88x = 7,372.67 × 1,405.80
  4. Step 4: Simplify right side
    4,915.88x = 10,364,492.46
  5. Step 5: Solve for x
    x = 10,364,492.46/4,915.88
  6. Step 6: Final answer
    x = 2,108.37

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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.