Home / 2,989.35-4,125.30-1,663.05

Finding the Fourth Proportional to 2,989.35, 4,125.30 and 1,663.05

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Solution

The fourth proportional to 2,989.35, 4,125.30 and 1,663.05 is: 2,295.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.35 : 4,125.30 = 1,663.05 : x
  2. Step 2: Convert to fraction form
    2,989.35/4,125.30 = 1,663.05/x
  3. Step 3: Cross multiply
    2,989.35x = 4,125.30 × 1,663.05
  4. Step 4: Simplify right side
    2,989.35x = 6,860,580.17
  5. Step 5: Solve for x
    x = 6,860,580.17/2,989.35
  6. Step 6: Final answer
    x = 2,295.01

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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.