Home / 1,675.40-2,312.06-929.41

Finding the Fourth Proportional to 1,675.40, 2,312.06 and 929.41

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Solution

The fourth proportional to 1,675.40, 2,312.06 and 929.41 is: 1,282.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,675.40 : 2,312.06 = 929.41 : x
  2. Step 2: Convert to fraction form
    1,675.40/2,312.06 = 929.41/x
  3. Step 3: Cross multiply
    1,675.40x = 2,312.06 × 929.41
  4. Step 4: Simplify right side
    1,675.40x = 2,148,842.45
  5. Step 5: Solve for x
    x = 2,148,842.45/1,675.40
  6. Step 6: Final answer
    x = 1,282.59

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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.