Home / 1,043.50-1,439.35-669.89

Finding the Fourth Proportional to 1,043.50, 1,439.35 and 669.89

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Solution

The fourth proportional to 1,043.50, 1,439.35 and 669.89 is: 924.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.50 : 1,439.35 = 669.89 : x
  2. Step 2: Convert to fraction form
    1,043.50/1,439.35 = 669.89/x
  3. Step 3: Cross multiply
    1,043.50x = 1,439.35 × 669.89
  4. Step 4: Simplify right side
    1,043.50x = 964,206.17
  5. Step 5: Solve for x
    x = 964,206.17/1,043.50
  6. Step 6: Final answer
    x = 924.01

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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.