Home / 9,315.48-12,854.79-5,335.68

Finding the Fourth Proportional to 9,315.48, 12,854.79 and 5,335.68

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Solution

The fourth proportional to 9,315.48, 12,854.79 and 5,335.68 is: 7,362.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.48 : 12,854.79 = 5,335.68 : x
  2. Step 2: Convert to fraction form
    9,315.48/12,854.79 = 5,335.68/x
  3. Step 3: Cross multiply
    9,315.48x = 12,854.79 × 5,335.68
  4. Step 4: Simplify right side
    9,315.48x = 68,589,045.91
  5. Step 5: Solve for x
    x = 68,589,045.91/9,315.48
  6. Step 6: Final answer
    x = 7,362.91

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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.