Home / 4,678.13-6,456.17-2,688.77

Finding the Fourth Proportional to 4,678.13, 6,456.17 and 2,688.77

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Solution

The fourth proportional to 4,678.13, 6,456.17 and 2,688.77 is: 3,710.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.13 : 6,456.17 = 2,688.77 : x
  2. Step 2: Convert to fraction form
    4,678.13/6,456.17 = 2,688.77/x
  3. Step 3: Cross multiply
    4,678.13x = 6,456.17 × 2,688.77
  4. Step 4: Simplify right side
    4,678.13x = 17,359,156.21
  5. Step 5: Solve for x
    x = 17,359,156.21/4,678.13
  6. Step 6: Final answer
    x = 3,710.70

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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.