Home / 7,815.04-10,785.01-4,278.25

Finding the Fourth Proportional to 7,815.04, 10,785.01 and 4,278.25

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Solution

The fourth proportional to 7,815.04, 10,785.01 and 4,278.25 is: 5,904.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.04 : 10,785.01 = 4,278.25 : x
  2. Step 2: Convert to fraction form
    7,815.04/10,785.01 = 4,278.25/x
  3. Step 3: Cross multiply
    7,815.04x = 10,785.01 × 4,278.25
  4. Step 4: Simplify right side
    7,815.04x = 46,140,969.03
  5. Step 5: Solve for x
    x = 46,140,969.03/7,815.04
  6. Step 6: Final answer
    x = 5,904.12

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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.