Home / 5,688.18-7,857.34-5,157.65

Finding the Fourth Proportional to 5,688.18, 7,857.34 and 5,157.65

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Solution

The fourth proportional to 5,688.18, 7,857.34 and 5,157.65 is: 7,124.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,688.18 : 7,857.34 = 5,157.65 : x
  2. Step 2: Convert to fraction form
    5,688.18/7,857.34 = 5,157.65/x
  3. Step 3: Cross multiply
    5,688.18x = 7,857.34 × 5,157.65
  4. Step 4: Simplify right side
    5,688.18x = 40,525,409.65
  5. Step 5: Solve for x
    x = 40,525,409.65/5,688.18
  6. Step 6: Final answer
    x = 7,124.49

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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.