Home / 9,784.32-13,500.84-6,428.48

Finding the Fourth Proportional to 9,784.32, 13,500.84 and 6,428.48

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Solution

The fourth proportional to 9,784.32, 13,500.84 and 6,428.48 is: 8,870.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,784.32 : 13,500.84 = 6,428.48 : x
  2. Step 2: Convert to fraction form
    9,784.32/13,500.84 = 6,428.48/x
  3. Step 3: Cross multiply
    9,784.32x = 13,500.84 × 6,428.48
  4. Step 4: Simplify right side
    9,784.32x = 86,789,879.92
  5. Step 5: Solve for x
    x = 86,789,879.92/9,784.32
  6. Step 6: Final answer
    x = 8,870.30

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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.