Home / 1,612.46-2,415.27-918.77

Finding the Fourth Proportional to 1,612.46, 2,415.27 and 918.77

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Solution

The fourth proportional to 1,612.46, 2,415.27 and 918.77 is: 1,376.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.46 : 2,415.27 = 918.77 : x
  2. Step 2: Convert to fraction form
    1,612.46/2,415.27 = 918.77/x
  3. Step 3: Cross multiply
    1,612.46x = 2,415.27 × 918.77
  4. Step 4: Simplify right side
    1,612.46x = 2,219,070.61
  5. Step 5: Solve for x
    x = 2,219,070.61/1,612.46
  6. Step 6: Final answer
    x = 1,376.20

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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.