Home / 7,721.40-10,657.58-5,331.77

Finding the Fourth Proportional to 7,721.40, 10,657.58 and 5,331.77

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Solution

The fourth proportional to 7,721.40, 10,657.58 and 5,331.77 is: 7,359.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.40 : 10,657.58 = 5,331.77 : x
  2. Step 2: Convert to fraction form
    7,721.40/10,657.58 = 5,331.77/x
  3. Step 3: Cross multiply
    7,721.40x = 10,657.58 × 5,331.77
  4. Step 4: Simplify right side
    7,721.40x = 56,823,685.37
  5. Step 5: Solve for x
    x = 56,823,685.37/7,721.40
  6. Step 6: Final answer
    x = 7,359.25

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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.