Home / 1,409.10-2,113.72-435.36

Finding the Fourth Proportional to 1,409.10, 2,113.72 and 435.36

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Solution

The fourth proportional to 1,409.10, 2,113.72 and 435.36 is: 653.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.10 : 2,113.72 = 435.36 : x
  2. Step 2: Convert to fraction form
    1,409.10/2,113.72 = 435.36/x
  3. Step 3: Cross multiply
    1,409.10x = 2,113.72 × 435.36
  4. Step 4: Simplify right side
    1,409.10x = 920,229.14
  5. Step 5: Solve for x
    x = 920,229.14/1,409.10
  6. Step 6: Final answer
    x = 653.06

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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.