Home / 3,903.77-5,386.35-2,645.05

Finding the Fourth Proportional to 3,903.77, 5,386.35 and 2,645.05

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Solution

The fourth proportional to 3,903.77, 5,386.35 and 2,645.05 is: 3,649.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.77 : 5,386.35 = 2,645.05 : x
  2. Step 2: Convert to fraction form
    3,903.77/5,386.35 = 2,645.05/x
  3. Step 3: Cross multiply
    3,903.77x = 5,386.35 × 2,645.05
  4. Step 4: Simplify right side
    3,903.77x = 14,247,151.84
  5. Step 5: Solve for x
    x = 14,247,151.84/3,903.77
  6. Step 6: Final answer
    x = 3,649.59

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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.