Home / 2,830.42-3,907.65-1,887.58

Finding the Fourth Proportional to 2,830.42, 3,907.65 and 1,887.58

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Solution

The fourth proportional to 2,830.42, 3,907.65 and 1,887.58 is: 2,605.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.42 : 3,907.65 = 1,887.58 : x
  2. Step 2: Convert to fraction form
    2,830.42/3,907.65 = 1,887.58/x
  3. Step 3: Cross multiply
    2,830.42x = 3,907.65 × 1,887.58
  4. Step 4: Simplify right side
    2,830.42x = 7,376,001.99
  5. Step 5: Solve for x
    x = 7,376,001.99/2,830.42
  6. Step 6: Final answer
    x = 2,605.97

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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.