Home / 7,278.12-10,030.48-5,285.22

Finding the Fourth Proportional to 7,278.12, 10,030.48 and 5,285.22

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Solution

The fourth proportional to 7,278.12, 10,030.48 and 5,285.22 is: 7,283.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.12 : 10,030.48 = 5,285.22 : x
  2. Step 2: Convert to fraction form
    7,278.12/10,030.48 = 5,285.22/x
  3. Step 3: Cross multiply
    7,278.12x = 10,030.48 × 5,285.22
  4. Step 4: Simplify right side
    7,278.12x = 53,013,272.41
  5. Step 5: Solve for x
    x = 53,013,272.41/7,278.12
  6. Step 6: Final answer
    x = 7,283.92

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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.