Home / 5,429.24-8,126.40-4,917.72

Finding the Fourth Proportional to 5,429.24, 8,126.40 and 4,917.72

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Solution

The fourth proportional to 5,429.24, 8,126.40 and 4,917.72 is: 7,360.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429.24 : 8,126.40 = 4,917.72 : x
  2. Step 2: Convert to fraction form
    5,429.24/8,126.40 = 4,917.72/x
  3. Step 3: Cross multiply
    5,429.24x = 8,126.40 × 4,917.72
  4. Step 4: Simplify right side
    5,429.24x = 39,963,359.81
  5. Step 5: Solve for x
    x = 39,963,359.81/5,429.24
  6. Step 6: Final answer
    x = 7,360.77

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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.