Home / 1,557.72-2,153.76-1,488.87

Finding the Fourth Proportional to 1,557.72, 2,153.76 and 1,488.87

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Solution

The fourth proportional to 1,557.72, 2,153.76 and 1,488.87 is: 2,058.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.72 : 2,153.76 = 1,488.87 : x
  2. Step 2: Convert to fraction form
    1,557.72/2,153.76 = 1,488.87/x
  3. Step 3: Cross multiply
    1,557.72x = 2,153.76 × 1,488.87
  4. Step 4: Simplify right side
    1,557.72x = 3,206,668.65
  5. Step 5: Solve for x
    x = 3,206,668.65/1,557.72
  6. Step 6: Final answer
    x = 2,058.57

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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.