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Finding the Fourth Proportional to 7,410.70, 11,116.05 and 5,345.20

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Solution

The fourth proportional to 7,410.70, 11,116.05 and 5,345.20 is: 8,017.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,410.70 : 11,116.05 = 5,345.20 : x
  2. Step 2: Convert to fraction form
    7,410.70/11,116.05 = 5,345.20/x
  3. Step 3: Cross multiply
    7,410.70x = 11,116.05 × 5,345.20
  4. Step 4: Simplify right side
    7,410.70x = 59,417,510.46
  5. Step 5: Solve for x
    x = 59,417,510.46/7,410.70
  6. Step 6: Final answer
    x = 8,017.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.