Home / 7,031.13-9,703.05-3,887.31

Finding the Fourth Proportional to 7,031.13, 9,703.05 and 3,887.31

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Solution

The fourth proportional to 7,031.13, 9,703.05 and 3,887.31 is: 5,364.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,031.13 : 9,703.05 = 3,887.31 : x
  2. Step 2: Convert to fraction form
    7,031.13/9,703.05 = 3,887.31/x
  3. Step 3: Cross multiply
    7,031.13x = 9,703.05 × 3,887.31
  4. Step 4: Simplify right side
    7,031.13x = 37,718,763.30
  5. Step 5: Solve for x
    x = 37,718,763.30/7,031.13
  6. Step 6: Final answer
    x = 5,364.54

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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.