Home / 7,111.13-9,815.40-4,760.10

Finding the Fourth Proportional to 7,111.13, 9,815.40 and 4,760.10

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Solution

The fourth proportional to 7,111.13, 9,815.40 and 4,760.10 is: 6,570.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.13 : 9,815.40 = 4,760.10 : x
  2. Step 2: Convert to fraction form
    7,111.13/9,815.40 = 4,760.10/x
  3. Step 3: Cross multiply
    7,111.13x = 9,815.40 × 4,760.10
  4. Step 4: Simplify right side
    7,111.13x = 46,722,285.54
  5. Step 5: Solve for x
    x = 46,722,285.54/7,111.13
  6. Step 6: Final answer
    x = 6,570.31

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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.