Home / 1,569.40-2,354.10-1,277.80

Finding the Fourth Proportional to 1,569.40, 2,354.10 and 1,277.80

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Solution

The fourth proportional to 1,569.40, 2,354.10 and 1,277.80 is: 1,916.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569.40 : 2,354.10 = 1,277.80 : x
  2. Step 2: Convert to fraction form
    1,569.40/2,354.10 = 1,277.80/x
  3. Step 3: Cross multiply
    1,569.40x = 2,354.10 × 1,277.80
  4. Step 4: Simplify right side
    1,569.40x = 3,008,068.98
  5. Step 5: Solve for x
    x = 3,008,068.98/1,569.40
  6. Step 6: Final answer
    x = 1,916.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.