Home / 7,811.36-10,770-6,313.76

Finding the Fourth Proportional to 7,811.36, 10,770 and 6,313.76

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Solution

The fourth proportional to 7,811.36, 10,770 and 6,313.76 is: 8,705.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.36 : 10,770 = 6,313.76 : x
  2. Step 2: Convert to fraction form
    7,811.36/10,770 = 6,313.76/x
  3. Step 3: Cross multiply
    7,811.36x = 10,770 × 6,313.76
  4. Step 4: Simplify right side
    7,811.36x = 67,999,195.20
  5. Step 5: Solve for x
    x = 67,999,195.20/7,811.36
  6. Step 6: Final answer
    x = 8,705.17

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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.