Home / 1,555.48-2,145.78-1,051.60

Finding the Fourth Proportional to 1,555.48, 2,145.78 and 1,051.60

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Solution

The fourth proportional to 1,555.48, 2,145.78 and 1,051.60 is: 1,450.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.48 : 2,145.78 = 1,051.60 : x
  2. Step 2: Convert to fraction form
    1,555.48/2,145.78 = 1,051.60/x
  3. Step 3: Cross multiply
    1,555.48x = 2,145.78 × 1,051.60
  4. Step 4: Simplify right side
    1,555.48x = 2,256,502.25
  5. Step 5: Solve for x
    x = 2,256,502.25/1,555.48
  6. Step 6: Final answer
    x = 1,450.68

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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.