Home / 1,557.40-2,346.79-1,289.52

Finding the Fourth Proportional to 1,557.40, 2,346.79 and 1,289.52

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Solution

The fourth proportional to 1,557.40, 2,346.79 and 1,289.52 is: 1,943.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.40 : 2,346.79 = 1,289.52 : x
  2. Step 2: Convert to fraction form
    1,557.40/2,346.79 = 1,289.52/x
  3. Step 3: Cross multiply
    1,557.40x = 2,346.79 × 1,289.52
  4. Step 4: Simplify right side
    1,557.40x = 3,026,232.64
  5. Step 5: Solve for x
    x = 3,026,232.64/1,557.40
  6. Step 6: Final answer
    x = 1,943.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.