Home / 2,931.47-4,397.21-740.18

Finding the Fourth Proportional to 2,931.47, 4,397.21 and 740.18

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Solution

The fourth proportional to 2,931.47, 4,397.21 and 740.18 is: 1,110.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.47 : 4,397.21 = 740.18 : x
  2. Step 2: Convert to fraction form
    2,931.47/4,397.21 = 740.18/x
  3. Step 3: Cross multiply
    2,931.47x = 4,397.21 × 740.18
  4. Step 4: Simplify right side
    2,931.47x = 3,254,701.21
  5. Step 5: Solve for x
    x = 3,254,701.21/2,931.47
  6. Step 6: Final answer
    x = 1,110.26

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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.