Home / 1,440.16-1,988.22-943.24

Finding the Fourth Proportional to 1,440.16, 1,988.22 and 943.24

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Solution

The fourth proportional to 1,440.16, 1,988.22 and 943.24 is: 1,302.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.16 : 1,988.22 = 943.24 : x
  2. Step 2: Convert to fraction form
    1,440.16/1,988.22 = 943.24/x
  3. Step 3: Cross multiply
    1,440.16x = 1,988.22 × 943.24
  4. Step 4: Simplify right side
    1,440.16x = 1,875,368.63
  5. Step 5: Solve for x
    x = 1,875,368.63/1,440.16
  6. Step 6: Final answer
    x = 1,302.19

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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.