Home / 3,117.08-4,678.34-1,269.20

Finding the Fourth Proportional to 3,117.08, 4,678.34 and 1,269.20

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Solution

The fourth proportional to 3,117.08, 4,678.34 and 1,269.20 is: 1,904.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.08 : 4,678.34 = 1,269.20 : x
  2. Step 2: Convert to fraction form
    3,117.08/4,678.34 = 1,269.20/x
  3. Step 3: Cross multiply
    3,117.08x = 4,678.34 × 1,269.20
  4. Step 4: Simplify right side
    3,117.08x = 5,937,749.13
  5. Step 5: Solve for x
    x = 5,937,749.13/3,117.08
  6. Step 6: Final answer
    x = 1,904.91

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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.