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Finding the Fourth Proportional to 7,043.19, 9,719.40 and 4,018.24

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Solution

The fourth proportional to 7,043.19, 9,719.40 and 4,018.24 is: 5,545.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,043.19 : 9,719.40 = 4,018.24 : x
  2. Step 2: Convert to fraction form
    7,043.19/9,719.40 = 4,018.24/x
  3. Step 3: Cross multiply
    7,043.19x = 9,719.40 × 4,018.24
  4. Step 4: Simplify right side
    7,043.19x = 39,054,881.86
  5. Step 5: Solve for x
    x = 39,054,881.86/7,043.19
  6. Step 6: Final answer
    x = 5,545.06

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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.