Home / 1,087.32-1,623.75-1,031.16

Finding the Fourth Proportional to 1,087.32, 1,623.75 and 1,031.16

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Solution

The fourth proportional to 1,087.32, 1,623.75 and 1,031.16 is: 1,539.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.32 : 1,623.75 = 1,031.16 : x
  2. Step 2: Convert to fraction form
    1,087.32/1,623.75 = 1,031.16/x
  3. Step 3: Cross multiply
    1,087.32x = 1,623.75 × 1,031.16
  4. Step 4: Simplify right side
    1,087.32x = 1,674,346.05
  5. Step 5: Solve for x
    x = 1,674,346.05/1,087.32
  6. Step 6: Final answer
    x = 1,539.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.