Home / 2,155.04-2,973.84-1,210.87

Finding the Fourth Proportional to 2,155.04, 2,973.84 and 1,210.87

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Solution

The fourth proportional to 2,155.04, 2,973.84 and 1,210.87 is: 1,670.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.04 : 2,973.84 = 1,210.87 : x
  2. Step 2: Convert to fraction form
    2,155.04/2,973.84 = 1,210.87/x
  3. Step 3: Cross multiply
    2,155.04x = 2,973.84 × 1,210.87
  4. Step 4: Simplify right side
    2,155.04x = 3,600,947.47
  5. Step 5: Solve for x
    x = 3,600,947.47/2,155.04
  6. Step 6: Final answer
    x = 1,670.94

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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.