Home / 1,656.90-2,281.50-1,620.45

Finding the Fourth Proportional to 1,656.90, 2,281.50 and 1,620.45

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Solution

The fourth proportional to 1,656.90, 2,281.50 and 1,620.45 is: 2,231.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,656.90 : 2,281.50 = 1,620.45 : x
  2. Step 2: Convert to fraction form
    1,656.90/2,281.50 = 1,620.45/x
  3. Step 3: Cross multiply
    1,656.90x = 2,281.50 × 1,620.45
  4. Step 4: Simplify right side
    1,656.90x = 3,697,056.68
  5. Step 5: Solve for x
    x = 3,697,056.68/1,656.90
  6. Step 6: Final answer
    x = 2,231.31

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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.