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Finding the Fourth Proportional to 1,870.95, 2,798.09 and 1,403.58

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Solution

The fourth proportional to 1,870.95, 2,798.09 and 1,403.58 is: 2,099.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.95 : 2,798.09 = 1,403.58 : x
  2. Step 2: Convert to fraction form
    1,870.95/2,798.09 = 1,403.58/x
  3. Step 3: Cross multiply
    1,870.95x = 2,798.09 × 1,403.58
  4. Step 4: Simplify right side
    1,870.95x = 3,927,336.14
  5. Step 5: Solve for x
    x = 3,927,336.14/1,870.95
  6. Step 6: Final answer
    x = 2,099.11

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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.