Home / 4,678.09-6,455.67-2,688.59

Finding the Fourth Proportional to 4,678.09, 6,455.67 and 2,688.59

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Solution

The fourth proportional to 4,678.09, 6,455.67 and 2,688.59 is: 3,710.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.09 : 6,455.67 = 2,688.59 : x
  2. Step 2: Convert to fraction form
    4,678.09/6,455.67 = 2,688.59/x
  3. Step 3: Cross multiply
    4,678.09x = 6,455.67 × 2,688.59
  4. Step 4: Simplify right side
    4,678.09x = 17,356,655.86
  5. Step 5: Solve for x
    x = 17,356,655.86/4,678.09
  6. Step 6: Final answer
    x = 3,710.20

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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.