Home / 1,477.90-2,039.70-918.28

Finding the Fourth Proportional to 1,477.90, 2,039.70 and 918.28

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Solution

The fourth proportional to 1,477.90, 2,039.70 and 918.28 is: 1,267.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.90 : 2,039.70 = 918.28 : x
  2. Step 2: Convert to fraction form
    1,477.90/2,039.70 = 918.28/x
  3. Step 3: Cross multiply
    1,477.90x = 2,039.70 × 918.28
  4. Step 4: Simplify right side
    1,477.90x = 1,873,015.72
  5. Step 5: Solve for x
    x = 1,873,015.72/1,477.90
  6. Step 6: Final answer
    x = 1,267.35

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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.