Home / 1,564.49-2,156.95-1,345.79

Finding the Fourth Proportional to 1,564.49, 2,156.95 and 1,345.79

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Solution

The fourth proportional to 1,564.49, 2,156.95 and 1,345.79 is: 1,855.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,564.49 : 2,156.95 = 1,345.79 : x
  2. Step 2: Convert to fraction form
    1,564.49/2,156.95 = 1,345.79/x
  3. Step 3: Cross multiply
    1,564.49x = 2,156.95 × 1,345.79
  4. Step 4: Simplify right side
    1,564.49x = 2,902,801.74
  5. Step 5: Solve for x
    x = 2,902,801.74/1,564.49
  6. Step 6: Final answer
    x = 1,855.43

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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.