Home / 5,320.16-7,980.64-1,622.70

Finding the Fourth Proportional to 5,320.16, 7,980.64 and 1,622.70

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Solution

The fourth proportional to 5,320.16, 7,980.64 and 1,622.70 is: 2,434.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.16 : 7,980.64 = 1,622.70 : x
  2. Step 2: Convert to fraction form
    5,320.16/7,980.64 = 1,622.70/x
  3. Step 3: Cross multiply
    5,320.16x = 7,980.64 × 1,622.70
  4. Step 4: Simplify right side
    5,320.16x = 12,950,184.53
  5. Step 5: Solve for x
    x = 12,950,184.53/5,320.16
  6. Step 6: Final answer
    x = 2,434.17

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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.