Home / 1,868.40-2,802.72-569.76

Finding the Fourth Proportional to 1,868.40, 2,802.72 and 569.76

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Solution

The fourth proportional to 1,868.40, 2,802.72 and 569.76 is: 854.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.40 : 2,802.72 = 569.76 : x
  2. Step 2: Convert to fraction form
    1,868.40/2,802.72 = 569.76/x
  3. Step 3: Cross multiply
    1,868.40x = 2,802.72 × 569.76
  4. Step 4: Simplify right side
    1,868.40x = 1,596,877.75
  5. Step 5: Solve for x
    x = 1,596,877.75/1,868.40
  6. Step 6: Final answer
    x = 854.68

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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.