Home / 7,815.04-10,784.81-4,278.31

Finding the Fourth Proportional to 7,815.04, 10,784.81 and 4,278.31

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Solution

The fourth proportional to 7,815.04, 10,784.81 and 4,278.31 is: 5,904.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.04 : 10,784.81 = 4,278.31 : x
  2. Step 2: Convert to fraction form
    7,815.04/10,784.81 = 4,278.31/x
  3. Step 3: Cross multiply
    7,815.04x = 10,784.81 × 4,278.31
  4. Step 4: Simplify right side
    7,815.04x = 46,140,744.20
  5. Step 5: Solve for x
    x = 46,140,744.20/7,815.04
  6. Step 6: Final answer
    x = 5,904.10

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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.