Home / 1,897.84-2,620.57-1,307.35

Finding the Fourth Proportional to 1,897.84, 2,620.57 and 1,307.35

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Solution

The fourth proportional to 1,897.84, 2,620.57 and 1,307.35 is: 1,805.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897.84 : 2,620.57 = 1,307.35 : x
  2. Step 2: Convert to fraction form
    1,897.84/2,620.57 = 1,307.35/x
  3. Step 3: Cross multiply
    1,897.84x = 2,620.57 × 1,307.35
  4. Step 4: Simplify right side
    1,897.84x = 3,425,989.09
  5. Step 5: Solve for x
    x = 3,425,989.09/1,897.84
  6. Step 6: Final answer
    x = 1,805.21

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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.