Home / 2,385.85-3,289.99-1,887.70

Finding the Fourth Proportional to 2,385.85, 3,289.99 and 1,887.70

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Solution

The fourth proportional to 2,385.85, 3,289.99 and 1,887.70 is: 2,603.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.85 : 3,289.99 = 1,887.70 : x
  2. Step 2: Convert to fraction form
    2,385.85/3,289.99 = 1,887.70/x
  3. Step 3: Cross multiply
    2,385.85x = 3,289.99 × 1,887.70
  4. Step 4: Simplify right side
    2,385.85x = 6,210,514.12
  5. Step 5: Solve for x
    x = 6,210,514.12/2,385.85
  6. Step 6: Final answer
    x = 2,603.06

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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.