Home / 5,385.83-8,077.58-1,687.58

Finding the Fourth Proportional to 5,385.83, 8,077.58 and 1,687.58

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Solution

The fourth proportional to 5,385.83, 8,077.58 and 1,687.58 is: 2,531.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.83 : 8,077.58 = 1,687.58 : x
  2. Step 2: Convert to fraction form
    5,385.83/8,077.58 = 1,687.58/x
  3. Step 3: Cross multiply
    5,385.83x = 8,077.58 × 1,687.58
  4. Step 4: Simplify right side
    5,385.83x = 13,631,513.63
  5. Step 5: Solve for x
    x = 13,631,513.63/5,385.83
  6. Step 6: Final answer
    x = 2,531.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.