Home / 9,170.50-12,655.44-4,978.75

Finding the Fourth Proportional to 9,170.50, 12,655.44 and 4,978.75

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Solution

The fourth proportional to 9,170.50, 12,655.44 and 4,978.75 is: 6,870.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.50 : 12,655.44 = 4,978.75 : x
  2. Step 2: Convert to fraction form
    9,170.50/12,655.44 = 4,978.75/x
  3. Step 3: Cross multiply
    9,170.50x = 12,655.44 × 4,978.75
  4. Step 4: Simplify right side
    9,170.50x = 63,008,271.90
  5. Step 5: Solve for x
    x = 63,008,271.90/9,170.50
  6. Step 6: Final answer
    x = 6,870.76

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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.