Home / 1,876.70-2,588.47-1,317.80

Finding the Fourth Proportional to 1,876.70, 2,588.47 and 1,317.80

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Solution

The fourth proportional to 1,876.70, 2,588.47 and 1,317.80 is: 1,817.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,876.70 : 2,588.47 = 1,317.80 : x
  2. Step 2: Convert to fraction form
    1,876.70/2,588.47 = 1,317.80/x
  3. Step 3: Cross multiply
    1,876.70x = 2,588.47 × 1,317.80
  4. Step 4: Simplify right side
    1,876.70x = 3,411,088.94
  5. Step 5: Solve for x
    x = 3,411,088.94/1,876.70
  6. Step 6: Final answer
    x = 1,817.60

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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.