Home / 31,278.78-46,918.33-7,905.24

Finding the Fourth Proportional to 31,278.78, 46,918.33 and 7,905.24

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Solution

The fourth proportional to 31,278.78, 46,918.33 and 7,905.24 is: 11,857.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,278.78 : 46,918.33 = 7,905.24 : x
  2. Step 2: Convert to fraction form
    31,278.78/46,918.33 = 7,905.24/x
  3. Step 3: Cross multiply
    31,278.78x = 46,918.33 × 7,905.24
  4. Step 4: Simplify right side
    31,278.78x = 370,900,639.29
  5. Step 5: Solve for x
    x = 370,900,639.29/31,278.78
  6. Step 6: Final answer
    x = 11,857.90

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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.