Home / 8,715.03-12,027.77-5,178.25

Finding the Fourth Proportional to 8,715.03, 12,027.77 and 5,178.25

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Solution

The fourth proportional to 8,715.03, 12,027.77 and 5,178.25 is: 7,146.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.03 : 12,027.77 = 5,178.25 : x
  2. Step 2: Convert to fraction form
    8,715.03/12,027.77 = 5,178.25/x
  3. Step 3: Cross multiply
    8,715.03x = 12,027.77 × 5,178.25
  4. Step 4: Simplify right side
    8,715.03x = 62,282,800.00
  5. Step 5: Solve for x
    x = 62,282,800.00/8,715.03
  6. Step 6: Final answer
    x = 7,146.60

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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.