Home / 2,890.59-3,988.07-1,770.36

Finding the Fourth Proportional to 2,890.59, 3,988.07 and 1,770.36

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Solution

The fourth proportional to 2,890.59, 3,988.07 and 1,770.36 is: 2,442.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.59 : 3,988.07 = 1,770.36 : x
  2. Step 2: Convert to fraction form
    2,890.59/3,988.07 = 1,770.36/x
  3. Step 3: Cross multiply
    2,890.59x = 3,988.07 × 1,770.36
  4. Step 4: Simplify right side
    2,890.59x = 7,060,319.61
  5. Step 5: Solve for x
    x = 7,060,319.61/2,890.59
  6. Step 6: Final answer
    x = 2,442.52

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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.