Home / 1,535.41-2,118.87-836.77

Finding the Fourth Proportional to 1,535.41, 2,118.87 and 836.77

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Solution

The fourth proportional to 1,535.41, 2,118.87 and 836.77 is: 1,154.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.41 : 2,118.87 = 836.77 : x
  2. Step 2: Convert to fraction form
    1,535.41/2,118.87 = 836.77/x
  3. Step 3: Cross multiply
    1,535.41x = 2,118.87 × 836.77
  4. Step 4: Simplify right side
    1,535.41x = 1,773,006.85
  5. Step 5: Solve for x
    x = 1,773,006.85/1,535.41
  6. Step 6: Final answer
    x = 1,154.74

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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.