Home / 3,649.45-5,038.65-2,808.67

Finding the Fourth Proportional to 3,649.45, 5,038.65 and 2,808.67

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Solution

The fourth proportional to 3,649.45, 5,038.65 and 2,808.67 is: 3,877.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,649.45 : 5,038.65 = 2,808.67 : x
  2. Step 2: Convert to fraction form
    3,649.45/5,038.65 = 2,808.67/x
  3. Step 3: Cross multiply
    3,649.45x = 5,038.65 × 2,808.67
  4. Step 4: Simplify right side
    3,649.45x = 14,151,905.10
  5. Step 5: Solve for x
    x = 14,151,905.10/3,649.45
  6. Step 6: Final answer
    x = 3,877.82

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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.