Home / 2,188.02-3,284.46-890.40

Finding the Fourth Proportional to 2,188.02, 3,284.46 and 890.40

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Solution

The fourth proportional to 2,188.02, 3,284.46 and 890.40 is: 1,336.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.02 : 3,284.46 = 890.40 : x
  2. Step 2: Convert to fraction form
    2,188.02/3,284.46 = 890.40/x
  3. Step 3: Cross multiply
    2,188.02x = 3,284.46 × 890.40
  4. Step 4: Simplify right side
    2,188.02x = 2,924,483.18
  5. Step 5: Solve for x
    x = 2,924,483.18/2,188.02
  6. Step 6: Final answer
    x = 1,336.59

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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.