Home / 4,915.45-7,372.77-1,405.72

Finding the Fourth Proportional to 4,915.45, 7,372.77 and 1,405.72

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Solution

The fourth proportional to 4,915.45, 7,372.77 and 1,405.72 is: 2,108.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.45 : 7,372.77 = 1,405.72 : x
  2. Step 2: Convert to fraction form
    4,915.45/7,372.77 = 1,405.72/x
  3. Step 3: Cross multiply
    4,915.45x = 7,372.77 × 1,405.72
  4. Step 4: Simplify right side
    4,915.45x = 10,364,050.24
  5. Step 5: Solve for x
    x = 10,364,050.24/4,915.45
  6. Step 6: Final answer
    x = 2,108.46

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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.