Home / 3,577.95-4,931.87-2,820.50

Finding the Fourth Proportional to 3,577.95, 4,931.87 and 2,820.50

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Solution

The fourth proportional to 3,577.95, 4,931.87 and 2,820.50 is: 3,887.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,577.95 : 4,931.87 = 2,820.50 : x
  2. Step 2: Convert to fraction form
    3,577.95/4,931.87 = 2,820.50/x
  3. Step 3: Cross multiply
    3,577.95x = 4,931.87 × 2,820.50
  4. Step 4: Simplify right side
    3,577.95x = 13,910,317.75
  5. Step 5: Solve for x
    x = 13,910,317.75/3,577.95
  6. Step 6: Final answer
    x = 3,887.79

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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.