Home / 3,562.10-4,915.80-1,990.16

Finding the Fourth Proportional to 3,562.10, 4,915.80 and 1,990.16

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Solution

The fourth proportional to 3,562.10, 4,915.80 and 1,990.16 is: 2,746.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,562.10 : 4,915.80 = 1,990.16 : x
  2. Step 2: Convert to fraction form
    3,562.10/4,915.80 = 1,990.16/x
  3. Step 3: Cross multiply
    3,562.10x = 4,915.80 × 1,990.16
  4. Step 4: Simplify right side
    3,562.10x = 9,783,228.53
  5. Step 5: Solve for x
    x = 9,783,228.53/3,562.10
  6. Step 6: Final answer
    x = 2,746.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.