Home / 1,675.09-2,311.58-929.05

Finding the Fourth Proportional to 1,675.09, 2,311.58 and 929.05

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Solution

The fourth proportional to 1,675.09, 2,311.58 and 929.05 is: 1,282.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,675.09 : 2,311.58 = 929.05 : x
  2. Step 2: Convert to fraction form
    1,675.09/2,311.58 = 929.05/x
  3. Step 3: Cross multiply
    1,675.09x = 2,311.58 × 929.05
  4. Step 4: Simplify right side
    1,675.09x = 2,147,561.84
  5. Step 5: Solve for x
    x = 2,147,561.84/1,675.09
  6. Step 6: Final answer
    x = 1,282.06

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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.