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Finding the Fourth Proportional to 8,956.85, 12,360.56 and 4,977.86

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Solution

The fourth proportional to 8,956.85, 12,360.56 and 4,977.86 is: 6,869.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,956.85 : 12,360.56 = 4,977.86 : x
  2. Step 2: Convert to fraction form
    8,956.85/12,360.56 = 4,977.86/x
  3. Step 3: Cross multiply
    8,956.85x = 12,360.56 × 4,977.86
  4. Step 4: Simplify right side
    8,956.85x = 61,529,050.51
  5. Step 5: Solve for x
    x = 61,529,050.51/8,956.85
  6. Step 6: Final answer
    x = 6,869.50

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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.