Home / 1,669.90-2,303.58-1,355.51

Finding the Fourth Proportional to 1,669.90, 2,303.58 and 1,355.51

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Solution

The fourth proportional to 1,669.90, 2,303.58 and 1,355.51 is: 1,869.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.90 : 2,303.58 = 1,355.51 : x
  2. Step 2: Convert to fraction form
    1,669.90/2,303.58 = 1,355.51/x
  3. Step 3: Cross multiply
    1,669.90x = 2,303.58 × 1,355.51
  4. Step 4: Simplify right side
    1,669.90x = 3,122,525.73
  5. Step 5: Solve for x
    x = 3,122,525.73/1,669.90
  6. Step 6: Final answer
    x = 1,869.89

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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.