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Finding the Fourth Proportional to 7,905.11, 10,910.13 and 4,547.86

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Solution

The fourth proportional to 7,905.11, 10,910.13 and 4,547.86 is: 6,276.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.11 : 10,910.13 = 4,547.86 : x
  2. Step 2: Convert to fraction form
    7,905.11/10,910.13 = 4,547.86/x
  3. Step 3: Cross multiply
    7,905.11x = 10,910.13 × 4,547.86
  4. Step 4: Simplify right side
    7,905.11x = 49,617,699.49
  5. Step 5: Solve for x
    x = 49,617,699.49/7,905.11
  6. Step 6: Final answer
    x = 6,276.67

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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.