Home / 5,108.77-7,050.56-2,871.19

Finding the Fourth Proportional to 5,108.77, 7,050.56 and 2,871.19

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Solution

The fourth proportional to 5,108.77, 7,050.56 and 2,871.19 is: 3,962.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.77 : 7,050.56 = 2,871.19 : x
  2. Step 2: Convert to fraction form
    5,108.77/7,050.56 = 2,871.19/x
  3. Step 3: Cross multiply
    5,108.77x = 7,050.56 × 2,871.19
  4. Step 4: Simplify right side
    5,108.77x = 20,243,491.82
  5. Step 5: Solve for x
    x = 20,243,491.82/5,108.77
  6. Step 6: Final answer
    x = 3,962.50

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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.