Home / 1,429.48-2,133.65-1,419.40

Finding the Fourth Proportional to 1,429.48, 2,133.65 and 1,419.40

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Solution

The fourth proportional to 1,429.48, 2,133.65 and 1,419.40 is: 2,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.48 : 2,133.65 = 1,419.40 : x
  2. Step 2: Convert to fraction form
    1,429.48/2,133.65 = 1,419.40/x
  3. Step 3: Cross multiply
    1,429.48x = 2,133.65 × 1,419.40
  4. Step 4: Simplify right side
    1,429.48x = 3,028,502.81
  5. Step 5: Solve for x
    x = 3,028,502.81/1,429.48
  6. Step 6: Final answer
    x = 2,118.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.