Home / 7,112.64-9,814.69-3,925.87

Finding the Fourth Proportional to 7,112.64, 9,814.69 and 3,925.87

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Solution

The fourth proportional to 7,112.64, 9,814.69 and 3,925.87 is: 5,417.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.64 : 9,814.69 = 3,925.87 : x
  2. Step 2: Convert to fraction form
    7,112.64/9,814.69 = 3,925.87/x
  3. Step 3: Cross multiply
    7,112.64x = 9,814.69 × 3,925.87
  4. Step 4: Simplify right side
    7,112.64x = 38,531,187.22
  5. Step 5: Solve for x
    x = 38,531,187.22/7,112.64
  6. Step 6: Final answer
    x = 5,417.29

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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.