Home / 7,118.70-10,688.85-5,477.10

Finding the Fourth Proportional to 7,118.70, 10,688.85 and 5,477.10

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Solution

The fourth proportional to 7,118.70, 10,688.85 and 5,477.10 is: 8,223.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.70 : 10,688.85 = 5,477.10 : x
  2. Step 2: Convert to fraction form
    7,118.70/10,688.85 = 5,477.10/x
  3. Step 3: Cross multiply
    7,118.70x = 10,688.85 × 5,477.10
  4. Step 4: Simplify right side
    7,118.70x = 58,543,900.34
  5. Step 5: Solve for x
    x = 58,543,900.34/7,118.70
  6. Step 6: Final answer
    x = 8,223.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.