Home / 2,153.42-2,970.95-1,407.81

Finding the Fourth Proportional to 2,153.42, 2,970.95 and 1,407.81

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Solution

The fourth proportional to 2,153.42, 2,970.95 and 1,407.81 is: 1,942.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.42 : 2,970.95 = 1,407.81 : x
  2. Step 2: Convert to fraction form
    2,153.42/2,970.95 = 1,407.81/x
  3. Step 3: Cross multiply
    2,153.42x = 2,970.95 × 1,407.81
  4. Step 4: Simplify right side
    2,153.42x = 4,182,533.12
  5. Step 5: Solve for x
    x = 4,182,533.12/2,153.42
  6. Step 6: Final answer
    x = 1,942.27

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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.