Home / 5,279.95-7,271.47-5,165.13

Finding the Fourth Proportional to 5,279.95, 7,271.47 and 5,165.13

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Solution

The fourth proportional to 5,279.95, 7,271.47 and 5,165.13 is: 7,113.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.95 : 7,271.47 = 5,165.13 : x
  2. Step 2: Convert to fraction form
    5,279.95/7,271.47 = 5,165.13/x
  3. Step 3: Cross multiply
    5,279.95x = 7,271.47 × 5,165.13
  4. Step 4: Simplify right side
    5,279.95x = 37,558,121.57
  5. Step 5: Solve for x
    x = 37,558,121.57/5,279.95
  6. Step 6: Final answer
    x = 7,113.35

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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.