Home / 1,417.79-2,123.93-929.36

Finding the Fourth Proportional to 1,417.79, 2,123.93 and 929.36

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Solution

The fourth proportional to 1,417.79, 2,123.93 and 929.36 is: 1,392.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.79 : 2,123.93 = 929.36 : x
  2. Step 2: Convert to fraction form
    1,417.79/2,123.93 = 929.36/x
  3. Step 3: Cross multiply
    1,417.79x = 2,123.93 × 929.36
  4. Step 4: Simplify right side
    1,417.79x = 1,973,890.94
  5. Step 5: Solve for x
    x = 1,973,890.94/1,417.79
  6. Step 6: Final answer
    x = 1,392.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.