Home / 10,461.51-15,689.84-3,890.79

Finding the Fourth Proportional to 10,461.51, 15,689.84 and 3,890.79

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Solution

The fourth proportional to 10,461.51, 15,689.84 and 3,890.79 is: 5,835.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,461.51 : 15,689.84 = 3,890.79 : x
  2. Step 2: Convert to fraction form
    10,461.51/15,689.84 = 3,890.79/x
  3. Step 3: Cross multiply
    10,461.51x = 15,689.84 × 3,890.79
  4. Step 4: Simplify right side
    10,461.51x = 61,045,853.12
  5. Step 5: Solve for x
    x = 61,045,853.12/10,461.51
  6. Step 6: Final answer
    x = 5,835.28

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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.