Home / 1,312.24-1,970.58-1,259.92

Finding the Fourth Proportional to 1,312.24, 1,970.58 and 1,259.92

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Solution

The fourth proportional to 1,312.24, 1,970.58 and 1,259.92 is: 1,892.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.24 : 1,970.58 = 1,259.92 : x
  2. Step 2: Convert to fraction form
    1,312.24/1,970.58 = 1,259.92/x
  3. Step 3: Cross multiply
    1,312.24x = 1,970.58 × 1,259.92
  4. Step 4: Simplify right side
    1,312.24x = 2,482,773.15
  5. Step 5: Solve for x
    x = 2,482,773.15/1,312.24
  6. Step 6: Final answer
    x = 1,892.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.