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Finding the Fourth Proportional to 9,145.40, 13,718.10 and 6,841.40

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Solution

The fourth proportional to 9,145.40, 13,718.10 and 6,841.40 is: 10,262.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.40 : 13,718.10 = 6,841.40 : x
  2. Step 2: Convert to fraction form
    9,145.40/13,718.10 = 6,841.40/x
  3. Step 3: Cross multiply
    9,145.40x = 13,718.10 × 6,841.40
  4. Step 4: Simplify right side
    9,145.40x = 93,851,009.34
  5. Step 5: Solve for x
    x = 93,851,009.34/9,145.40
  6. Step 6: Final answer
    x = 10,262.10

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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.