Home / 1,318.24-1,974.12-1,056.40

Finding the Fourth Proportional to 1,318.24, 1,974.12 and 1,056.40

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Solution

The fourth proportional to 1,318.24, 1,974.12 and 1,056.40 is: 1,582.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.24 : 1,974.12 = 1,056.40 : x
  2. Step 2: Convert to fraction form
    1,318.24/1,974.12 = 1,056.40/x
  3. Step 3: Cross multiply
    1,318.24x = 1,974.12 × 1,056.40
  4. Step 4: Simplify right side
    1,318.24x = 2,085,460.37
  5. Step 5: Solve for x
    x = 2,085,460.37/1,318.24
  6. Step 6: Final answer
    x = 1,582.00

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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.