Home / 1,535.07-2,118.41-836.45

Finding the Fourth Proportional to 1,535.07, 2,118.41 and 836.45

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Solution

The fourth proportional to 1,535.07, 2,118.41 and 836.45 is: 1,154.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.07 : 2,118.41 = 836.45 : x
  2. Step 2: Convert to fraction form
    1,535.07/2,118.41 = 836.45/x
  3. Step 3: Cross multiply
    1,535.07x = 2,118.41 × 836.45
  4. Step 4: Simplify right side
    1,535.07x = 1,771,929.27
  5. Step 5: Solve for x
    x = 1,771,929.27/1,535.07
  6. Step 6: Final answer
    x = 1,154.30

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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.