Home / 4,746.60-7,111.80-3,920.40

Finding the Fourth Proportional to 4,746.60, 7,111.80 and 3,920.40

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Solution

The fourth proportional to 4,746.60, 7,111.80 and 3,920.40 is: 5,873.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,746.60 : 7,111.80 = 3,920.40 : x
  2. Step 2: Convert to fraction form
    4,746.60/7,111.80 = 3,920.40/x
  3. Step 3: Cross multiply
    4,746.60x = 7,111.80 × 3,920.40
  4. Step 4: Simplify right side
    4,746.60x = 27,881,100.72
  5. Step 5: Solve for x
    x = 27,881,100.72/4,746.60
  6. Step 6: Final answer
    x = 5,873.91

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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.