Home / 10,490.90-15,734.58-3,915.32

Finding the Fourth Proportional to 10,490.90, 15,734.58 and 3,915.32

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Solution

The fourth proportional to 10,490.90, 15,734.58 and 3,915.32 is: 5,872.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,490.90 : 15,734.58 = 3,915.32 : x
  2. Step 2: Convert to fraction form
    10,490.90/15,734.58 = 3,915.32/x
  3. Step 3: Cross multiply
    10,490.90x = 15,734.58 × 3,915.32
  4. Step 4: Simplify right side
    10,490.90x = 61,605,915.77
  5. Step 5: Solve for x
    x = 61,605,915.77/10,490.90
  6. Step 6: Final answer
    x = 5,872.32

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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.