Home / 2,990.09-4,125.96-1,663.63

Finding the Fourth Proportional to 2,990.09, 4,125.96 and 1,663.63

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Solution

The fourth proportional to 2,990.09, 4,125.96 and 1,663.63 is: 2,295.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.09 : 4,125.96 = 1,663.63 : x
  2. Step 2: Convert to fraction form
    2,990.09/4,125.96 = 1,663.63/x
  3. Step 3: Cross multiply
    2,990.09x = 4,125.96 × 1,663.63
  4. Step 4: Simplify right side
    2,990.09x = 6,864,060.52
  5. Step 5: Solve for x
    x = 6,864,060.52/2,990.09
  6. Step 6: Final answer
    x = 2,295.60

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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.