Home / 1,669.48-2,498.80-888.40

Finding the Fourth Proportional to 1,669.48, 2,498.80 and 888.40

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Solution

The fourth proportional to 1,669.48, 2,498.80 and 888.40 is: 1,329.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.48 : 2,498.80 = 888.40 : x
  2. Step 2: Convert to fraction form
    1,669.48/2,498.80 = 888.40/x
  3. Step 3: Cross multiply
    1,669.48x = 2,498.80 × 888.40
  4. Step 4: Simplify right side
    1,669.48x = 2,219,933.92
  5. Step 5: Solve for x
    x = 2,219,933.92/1,669.48
  6. Step 6: Final answer
    x = 1,329.72

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1.5x scale

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.