Home / 2,814.48-3,885.63-1,931.58

Finding the Fourth Proportional to 2,814.48, 3,885.63 and 1,931.58

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Solution

The fourth proportional to 2,814.48, 3,885.63 and 1,931.58 is: 2,666.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.48 : 3,885.63 = 1,931.58 : x
  2. Step 2: Convert to fraction form
    2,814.48/3,885.63 = 1,931.58/x
  3. Step 3: Cross multiply
    2,814.48x = 3,885.63 × 1,931.58
  4. Step 4: Simplify right side
    2,814.48x = 7,505,405.20
  5. Step 5: Solve for x
    x = 7,505,405.20/2,814.48
  6. Step 6: Final answer
    x = 2,666.71

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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.