Home / 1,508.13-2,080.60-918.45

Finding the Fourth Proportional to 1,508.13, 2,080.60 and 918.45

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Solution

The fourth proportional to 1,508.13, 2,080.60 and 918.45 is: 1,267.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.13 : 2,080.60 = 918.45 : x
  2. Step 2: Convert to fraction form
    1,508.13/2,080.60 = 918.45/x
  3. Step 3: Cross multiply
    1,508.13x = 2,080.60 × 918.45
  4. Step 4: Simplify right side
    1,508.13x = 1,910,924.77
  5. Step 5: Solve for x
    x = 1,910,924.77/1,508.13
  6. Step 6: Final answer
    x = 1,267.08

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1.5x scale

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.