Home / 7,638.42-10,541.40-4,653.78

Finding the Fourth Proportional to 7,638.42, 10,541.40 and 4,653.78

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Solution

The fourth proportional to 7,638.42, 10,541.40 and 4,653.78 is: 6,422.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,638.42 : 10,541.40 = 4,653.78 : x
  2. Step 2: Convert to fraction form
    7,638.42/10,541.40 = 4,653.78/x
  3. Step 3: Cross multiply
    7,638.42x = 10,541.40 × 4,653.78
  4. Step 4: Simplify right side
    7,638.42x = 49,057,356.49
  5. Step 5: Solve for x
    x = 49,057,356.49/7,638.42
  6. Step 6: Final answer
    x = 6,422.45

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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.