Home / 9,579.02-13,218.54-5,387

Finding the Fourth Proportional to 9,579.02, 13,218.54 and 5,387

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Solution

The fourth proportional to 9,579.02, 13,218.54 and 5,387 is: 7,433.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,579.02 : 13,218.54 = 5,387 : x
  2. Step 2: Convert to fraction form
    9,579.02/13,218.54 = 5,387/x
  3. Step 3: Cross multiply
    9,579.02x = 13,218.54 × 5,387
  4. Step 4: Simplify right side
    9,579.02x = 71,208,274.98
  5. Step 5: Solve for x
    x = 71,208,274.98/9,579.02
  6. Step 6: Final answer
    x = 7,433.77

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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.