Home / 1,312.08-1,808.46-1,124.16

Finding the Fourth Proportional to 1,312.08, 1,808.46 and 1,124.16

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Solution

The fourth proportional to 1,312.08, 1,808.46 and 1,124.16 is: 1,549.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.08 : 1,808.46 = 1,124.16 : x
  2. Step 2: Convert to fraction form
    1,312.08/1,808.46 = 1,124.16/x
  3. Step 3: Cross multiply
    1,312.08x = 1,808.46 × 1,124.16
  4. Step 4: Simplify right side
    1,312.08x = 2,032,998.39
  5. Step 5: Solve for x
    x = 2,032,998.39/1,312.08
  6. Step 6: Final answer
    x = 1,549.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.