Home / 9,345.18-12,894.12-5,311.14

Finding the Fourth Proportional to 9,345.18, 12,894.12 and 5,311.14

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Solution

The fourth proportional to 9,345.18, 12,894.12 and 5,311.14 is: 7,328.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,345.18 : 12,894.12 = 5,311.14 : x
  2. Step 2: Convert to fraction form
    9,345.18/12,894.12 = 5,311.14/x
  3. Step 3: Cross multiply
    9,345.18x = 12,894.12 × 5,311.14
  4. Step 4: Simplify right side
    9,345.18x = 68,482,476.50
  5. Step 5: Solve for x
    x = 68,482,476.50/9,345.18
  6. Step 6: Final answer
    x = 7,328.11

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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.