Home / 2,784.10-4,176.15-1,690.60

Finding the Fourth Proportional to 2,784.10, 4,176.15 and 1,690.60

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Solution

The fourth proportional to 2,784.10, 4,176.15 and 1,690.60 is: 2,535.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.10 : 4,176.15 = 1,690.60 : x
  2. Step 2: Convert to fraction form
    2,784.10/4,176.15 = 1,690.60/x
  3. Step 3: Cross multiply
    2,784.10x = 4,176.15 × 1,690.60
  4. Step 4: Simplify right side
    2,784.10x = 7,060,199.19
  5. Step 5: Solve for x
    x = 7,060,199.19/2,784.10
  6. Step 6: Final answer
    x = 2,535.90

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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.