Home / 2,977.40-4,108.08-1,782.77

Finding the Fourth Proportional to 2,977.40, 4,108.08 and 1,782.77

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Solution

The fourth proportional to 2,977.40, 4,108.08 and 1,782.77 is: 2,459.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,977.40 : 4,108.08 = 1,782.77 : x
  2. Step 2: Convert to fraction form
    2,977.40/4,108.08 = 1,782.77/x
  3. Step 3: Cross multiply
    2,977.40x = 4,108.08 × 1,782.77
  4. Step 4: Simplify right side
    2,977.40x = 7,323,761.78
  5. Step 5: Solve for x
    x = 7,323,761.78/2,977.40
  6. Step 6: Final answer
    x = 2,459.78

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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.