Home / 1,409.07-2,113.37-435.18

Finding the Fourth Proportional to 1,409.07, 2,113.37 and 435.18

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Solution

The fourth proportional to 1,409.07, 2,113.37 and 435.18 is: 652.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.07 : 2,113.37 = 435.18 : x
  2. Step 2: Convert to fraction form
    1,409.07/2,113.37 = 435.18/x
  3. Step 3: Cross multiply
    1,409.07x = 2,113.37 × 435.18
  4. Step 4: Simplify right side
    1,409.07x = 919,694.18
  5. Step 5: Solve for x
    x = 919,694.18/1,409.07
  6. Step 6: Final answer
    x = 652.70

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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.