Home / 1,675.90-2,312.80-929.93

Finding the Fourth Proportional to 1,675.90, 2,312.80 and 929.93

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Solution

The fourth proportional to 1,675.90, 2,312.80 and 929.93 is: 1,283.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,675.90 : 2,312.80 = 929.93 : x
  2. Step 2: Convert to fraction form
    1,675.90/2,312.80 = 929.93/x
  3. Step 3: Cross multiply
    1,675.90x = 2,312.80 × 929.93
  4. Step 4: Simplify right side
    1,675.90x = 2,150,742.10
  5. Step 5: Solve for x
    x = 2,150,742.10/1,675.90
  6. Step 6: Final answer
    x = 1,283.34

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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.