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Finding the Fourth Proportional to 1,347.02, 2,018.47 and 798.58

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Solution

The fourth proportional to 1,347.02, 2,018.47 and 798.58 is: 1,196.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.02 : 2,018.47 = 798.58 : x
  2. Step 2: Convert to fraction form
    1,347.02/2,018.47 = 798.58/x
  3. Step 3: Cross multiply
    1,347.02x = 2,018.47 × 798.58
  4. Step 4: Simplify right side
    1,347.02x = 1,611,909.77
  5. Step 5: Solve for x
    x = 1,611,909.77/1,347.02
  6. Step 6: Final answer
    x = 1,196.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.