Home / 5,178.16-7,761.06-1,887.43

Finding the Fourth Proportional to 5,178.16, 7,761.06 and 1,887.43

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Solution

The fourth proportional to 5,178.16, 7,761.06 and 1,887.43 is: 2,828.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.16 : 7,761.06 = 1,887.43 : x
  2. Step 2: Convert to fraction form
    5,178.16/7,761.06 = 1,887.43/x
  3. Step 3: Cross multiply
    5,178.16x = 7,761.06 × 1,887.43
  4. Step 4: Simplify right side
    5,178.16x = 14,648,457.48
  5. Step 5: Solve for x
    x = 14,648,457.48/5,178.16
  6. Step 6: Final answer
    x = 2,828.89

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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.