Home / 1,438.26-1,984.05-1,088.34

Finding the Fourth Proportional to 1,438.26, 1,984.05 and 1,088.34

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Solution

The fourth proportional to 1,438.26, 1,984.05 and 1,088.34 is: 1,501.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.26 : 1,984.05 = 1,088.34 : x
  2. Step 2: Convert to fraction form
    1,438.26/1,984.05 = 1,088.34/x
  3. Step 3: Cross multiply
    1,438.26x = 1,984.05 × 1,088.34
  4. Step 4: Simplify right side
    1,438.26x = 2,159,320.98
  5. Step 5: Solve for x
    x = 2,159,320.98/1,438.26
  6. Step 6: Final answer
    x = 1,501.34

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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.