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Finding the Fourth Proportional to 7,901.86, 10,902.72 and 4,715.32

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Solution

The fourth proportional to 7,901.86, 10,902.72 and 4,715.32 is: 6,506.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,901.86 : 10,902.72 = 4,715.32 : x
  2. Step 2: Convert to fraction form
    7,901.86/10,902.72 = 4,715.32/x
  3. Step 3: Cross multiply
    7,901.86x = 10,902.72 × 4,715.32
  4. Step 4: Simplify right side
    7,901.86x = 51,409,813.67
  5. Step 5: Solve for x
    x = 51,409,813.67/7,901.86
  6. Step 6: Final answer
    x = 6,506.04

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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.