Home / 5,639.04-7,781.40-3,370.32

Finding the Fourth Proportional to 5,639.04, 7,781.40 and 3,370.32

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Solution

The fourth proportional to 5,639.04, 7,781.40 and 3,370.32 is: 4,650.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.04 : 7,781.40 = 3,370.32 : x
  2. Step 2: Convert to fraction form
    5,639.04/7,781.40 = 3,370.32/x
  3. Step 3: Cross multiply
    5,639.04x = 7,781.40 × 3,370.32
  4. Step 4: Simplify right side
    5,639.04x = 26,225,808.05
  5. Step 5: Solve for x
    x = 26,225,808.05/5,639.04
  6. Step 6: Final answer
    x = 4,650.76

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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.