Home / 7,648.02-10,554.76-4,290.78

Finding the Fourth Proportional to 7,648.02, 10,554.76 and 4,290.78

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Solution

The fourth proportional to 7,648.02, 10,554.76 and 4,290.78 is: 5,921.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,648.02 : 10,554.76 = 4,290.78 : x
  2. Step 2: Convert to fraction form
    7,648.02/10,554.76 = 4,290.78/x
  3. Step 3: Cross multiply
    7,648.02x = 10,554.76 × 4,290.78
  4. Step 4: Simplify right side
    7,648.02x = 45,288,153.11
  5. Step 5: Solve for x
    x = 45,288,153.11/7,648.02
  6. Step 6: Final answer
    x = 5,921.55

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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.