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Finding the Fourth Proportional to 1,535.92, 2,119.54 and 837.30

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Solution

The fourth proportional to 1,535.92, 2,119.54 and 837.30 is: 1,155.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.92 : 2,119.54 = 837.30 : x
  2. Step 2: Convert to fraction form
    1,535.92/2,119.54 = 837.30/x
  3. Step 3: Cross multiply
    1,535.92x = 2,119.54 × 837.30
  4. Step 4: Simplify right side
    1,535.92x = 1,774,690.84
  5. Step 5: Solve for x
    x = 1,774,690.84/1,535.92
  6. Step 6: Final answer
    x = 1,155.46

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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.