Home / 1,056.15-1,583.26-406.40

Finding the Fourth Proportional to 1,056.15, 1,583.26 and 406.40

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Solution

The fourth proportional to 1,056.15, 1,583.26 and 406.40 is: 609.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.15 : 1,583.26 = 406.40 : x
  2. Step 2: Convert to fraction form
    1,056.15/1,583.26 = 406.40/x
  3. Step 3: Cross multiply
    1,056.15x = 1,583.26 × 406.40
  4. Step 4: Simplify right side
    1,056.15x = 643,427.93
  5. Step 5: Solve for x
    x = 643,427.93/1,056.15
  6. Step 6: Final answer
    x = 609.22

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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.