Home / 7,815.21-10,785.74-5,302.59

Finding the Fourth Proportional to 7,815.21, 10,785.74 and 5,302.59

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Solution

The fourth proportional to 7,815.21, 10,785.74 and 5,302.59 is: 7,318.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.21 : 10,785.74 = 5,302.59 : x
  2. Step 2: Convert to fraction form
    7,815.21/10,785.74 = 5,302.59/x
  3. Step 3: Cross multiply
    7,815.21x = 10,785.74 × 5,302.59
  4. Step 4: Simplify right side
    7,815.21x = 57,192,357.07
  5. Step 5: Solve for x
    x = 57,192,357.07/7,815.21
  6. Step 6: Final answer
    x = 7,318.08

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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.