Home / 1,436.28-1,968.64-1,430.08

Finding the Fourth Proportional to 1,436.28, 1,968.64 and 1,430.08

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Solution

The fourth proportional to 1,436.28, 1,968.64 and 1,430.08 is: 1,960.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.28 : 1,968.64 = 1,430.08 : x
  2. Step 2: Convert to fraction form
    1,436.28/1,968.64 = 1,430.08/x
  3. Step 3: Cross multiply
    1,436.28x = 1,968.64 × 1,430.08
  4. Step 4: Simplify right side
    1,436.28x = 2,815,312.69
  5. Step 5: Solve for x
    x = 2,815,312.69/1,436.28
  6. Step 6: Final answer
    x = 1,960.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.