Home / 31,290.42-46,935.78-7,916.88

Finding the Fourth Proportional to 31,290.42, 46,935.78 and 7,916.88

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Solution

The fourth proportional to 31,290.42, 46,935.78 and 7,916.88 is: 11,875.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,290.42 : 46,935.78 = 7,916.88 : x
  2. Step 2: Convert to fraction form
    31,290.42/46,935.78 = 7,916.88/x
  3. Step 3: Cross multiply
    31,290.42x = 46,935.78 × 7,916.88
  4. Step 4: Simplify right side
    31,290.42x = 371,584,937.97
  5. Step 5: Solve for x
    x = 371,584,937.97/31,290.42
  6. Step 6: Final answer
    x = 11,875.36

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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.