Home / 7,775.40-10,721.58-5,253.13

Finding the Fourth Proportional to 7,775.40, 10,721.58 and 5,253.13

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Solution

The fourth proportional to 7,775.40, 10,721.58 and 5,253.13 is: 7,243.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,775.40 : 10,721.58 = 5,253.13 : x
  2. Step 2: Convert to fraction form
    7,775.40/10,721.58 = 5,253.13/x
  3. Step 3: Cross multiply
    7,775.40x = 10,721.58 × 5,253.13
  4. Step 4: Simplify right side
    7,775.40x = 56,321,827.28
  5. Step 5: Solve for x
    x = 56,321,827.28/7,775.40
  6. Step 6: Final answer
    x = 7,243.59

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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.