Home / 9,315.93-12,856.11-5,124.18

Finding the Fourth Proportional to 9,315.93, 12,856.11 and 5,124.18

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Solution

The fourth proportional to 9,315.93, 12,856.11 and 5,124.18 is: 7,071.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.93 : 12,856.11 = 5,124.18 : x
  2. Step 2: Convert to fraction form
    9,315.93/12,856.11 = 5,124.18/x
  3. Step 3: Cross multiply
    9,315.93x = 12,856.11 × 5,124.18
  4. Step 4: Simplify right side
    9,315.93x = 65,877,021.74
  5. Step 5: Solve for x
    x = 65,877,021.74/9,315.93
  6. Step 6: Final answer
    x = 7,071.44

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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.