Home / 6,315.54-8,715.32-3,663.20

Finding the Fourth Proportional to 6,315.54, 8,715.32 and 3,663.20

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Solution

The fourth proportional to 6,315.54, 8,715.32 and 3,663.20 is: 5,055.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,315.54 : 8,715.32 = 3,663.20 : x
  2. Step 2: Convert to fraction form
    6,315.54/8,715.32 = 3,663.20/x
  3. Step 3: Cross multiply
    6,315.54x = 8,715.32 × 3,663.20
  4. Step 4: Simplify right side
    6,315.54x = 31,925,960.22
  5. Step 5: Solve for x
    x = 31,925,960.22/6,315.54
  6. Step 6: Final answer
    x = 5,055.14

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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.