Home / 1,623.40-2,240.40-1,035.34

Finding the Fourth Proportional to 1,623.40, 2,240.40 and 1,035.34

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Solution

The fourth proportional to 1,623.40, 2,240.40 and 1,035.34 is: 1,428.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.40 : 2,240.40 = 1,035.34 : x
  2. Step 2: Convert to fraction form
    1,623.40/2,240.40 = 1,035.34/x
  3. Step 3: Cross multiply
    1,623.40x = 2,240.40 × 1,035.34
  4. Step 4: Simplify right side
    1,623.40x = 2,319,575.74
  5. Step 5: Solve for x
    x = 2,319,575.74/1,623.40
  6. Step 6: Final answer
    x = 1,428.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.