Home / 7,890.36-10,904.37-6,471.84

Finding the Fourth Proportional to 7,890.36, 10,904.37 and 6,471.84

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Solution

The fourth proportional to 7,890.36, 10,904.37 and 6,471.84 is: 8,943.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.36 : 10,904.37 = 6,471.84 : x
  2. Step 2: Convert to fraction form
    7,890.36/10,904.37 = 6,471.84/x
  3. Step 3: Cross multiply
    7,890.36x = 10,904.37 × 6,471.84
  4. Step 4: Simplify right side
    7,890.36x = 70,571,337.94
  5. Step 5: Solve for x
    x = 70,571,337.94/7,890.36
  6. Step 6: Final answer
    x = 8,943.99

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Double scale
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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.