Home / 2,154.80-2,973.76-1,210.64

Finding the Fourth Proportional to 2,154.80, 2,973.76 and 1,210.64

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Solution

The fourth proportional to 2,154.80, 2,973.76 and 1,210.64 is: 1,670.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.80 : 2,973.76 = 1,210.64 : x
  2. Step 2: Convert to fraction form
    2,154.80/2,973.76 = 1,210.64/x
  3. Step 3: Cross multiply
    2,154.80x = 2,973.76 × 1,210.64
  4. Step 4: Simplify right side
    2,154.80x = 3,600,152.81
  5. Step 5: Solve for x
    x = 3,600,152.81/2,154.80
  6. Step 6: Final answer
    x = 1,670.76

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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.